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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549



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FORM 10-Q



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|x | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ---------------------------------------------------------------------------------------

For the quarterly period ended April 30, 2007

Or



| ̈ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------------

For the transition period from  to

Commission File No. 0-13442



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MENTOR GRAPHICS CORPORATION

(Exact name of registrant as specified in its charter)



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|                                                               |  |                                  
|-------------------------------------------------------------- |  | ---------------------------------
|Oregon                                                         |  | 93-0786033                       
|(State or other jurisdiction of incorporation or organization) |  | (IRS Employer Identification No.)



|                                          |  |           
|----------------------------------------- |  | ----------
|8005 SW Boeckman Road Wilsonville, Oregon |  | 97070-7777
|(Address of principal executive offices)  |  | (Zip Code)

Registrants telephone number, including area code: (503) 685-7000

December 31

(Former name,
former address and former

fiscal year, if changed since last report)



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Indicate by check mark whether the registrant
(1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and
(2) has been subject to such filing requirements for the past 90 days.    Yes  x    No ̈

Indicate by check mark whether the Registrant is a large accelerated filer, an
accelerated filer, or a non-accelerated filer. See definition of accelerated filer and large accelerated filer in Rule 12b-2 of the Exchange Act. (Check one):

Large Accelerated Filer  x    Accelerated Filer ̈Non-accelerated filer ̈

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes ̈No  x

Number of shares of common stock, no par value, outstanding as of June 4, 2007: 85,385,828



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##### Table of Contents

MENTOR GRAPHICS CORPORATION

Index to Form 10-Q



|                                                                                                                                                                   |  |            
|------------------------------------------------------------------------------------------------------------------------------------------------------------------ |  | -----------
|                                                                                                                                                                   |  | Page Number
|PART I FINANCIAL INFORMATION                                                                                                                                       |  |            
|                                                                                                                                                                   | 
|Item 1. Financial Statements                                                                                                                                       |  |            
|                                                                                                                                                                   | 
|Condensed Consolidated Statements of Operations for the three months ended April 30, 2007 and March 31, 2006, and the one month ended January 31, 2007 (unaudited) |  | 3          
|                                                                                                                                                                   | 
|Condensed Consolidated Balance Sheets as of April 30, 2007, December 31, 2006 and January 31, 2007 (unaudited)                                                     |  | 4          
|                                                                                                                                                                   | 
|Condensed Consolidated Statements of Cash Flows for the three months ended April 30, 2007 and March 31, 2006, and the one month ended January 31, 2007 (unaudited) |  | 5          
|                                                                                                                                                                   | 
|Notes to Unaudited Condensed Consolidated Financial Statements                                                                                                     |  | 6          
|                                                                                                                                                                   | 
|Item 2. Managements Discussion and Analysis of Financial Condition and Results of Operations                                                                      |  | 19         
|                                                                                                                                                                   | 
|Item 3. Quantitative and Qualitative Disclosures About Market Risk                                                                                                 |  | 32         
|                                                                                                                                                                   | 
|Item 4. Controls and Procedures                                                                                                                                    |  | 34         
|                                                                                                                                                                   | 
|PART II OTHER INFORMATION                                                                                                                                          |  |            
|                                                                                                                                                                   | 
|Item 1A. Risk Factors                                                                                                                                              |  | 35         
|                                                                                                                                                                   | 
|Item 6. Exhibits                                                                                                                                                   |  | 42         
|                                                                                                                                                                   | 
|SIGNATURES                                                                                                                                                         |  | 43         



2



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##### Table of Contents

PART I. FINANCIAL INFORMATION



|Item 1. | Financial Statements
|------- | --------------------

Mentor Graphics Corporation

Condensed Consolidated Statements of Operations

(Unaudited)



|                                               |  |                                 |         |   |                                 |   |         |                                |  |   |         |  
|---------------------------------------------- |  | ------------------------------- | ------- | - | ------------------------------- | - | ------- | ------------------------------ |  | - | ------- | -
|                                               |  | Three MonthsEndedApril 30, 2007 |         |   | Three MonthsEndedMarch 31, 2006 |   |         | One MonthEndedJanuary 31, 2007 | 
|In thousands, except per share data            |  |                                 |         |   |                                 |   |         |                                | 
|Revenues:                                      |  |                                 |         |   |                                 |   |         |                                |  |   |         |  
|System and software                            |  | $                               | 113,858 |   |                                 | $ | 102,940 |                                |  | $ | 7,876   |  
|Service and support                            |  |                                 | 76,605  |   |                                 |   | 73,382  |                                |  |   | 23,006  |  
|                                               |  |                                 |         |   |                                 |   |         |                                |  |   |         |  
|Total revenues                                 |  |                                 | 190,463 |   |                                 |   | 176,322 |                                |  |   | 30,882  |  
|                                               |  |                                 |         |   |                                 |   |         |                                |  |   |         |  
|Cost of revenues:                              |  |                                 |         |   |                                 |   |         |                                |  |   |         |  
|System and software                            |  |                                 | 4,488   |   |                                 |   | 4,315   |                                |  |   | 1,368   |  
|Service and support                            |  |                                 | 22,183  |   |                                 |   | 20,250  |                                |  |   | 8,261   |  
|Amortization of purchased technology           |  |                                 | 3,042   |   |                                 |   | 3,235   |                                |  |   | 1,143   |  
|                                               |  |                                 |         |   |                                 |   |         |                                |  |   |         |  
|Total cost of revenues                         |  |                                 | 29,713  |   |                                 |   | 27,800  |                                |  |   | 10,772  |  
|                                               |  |                                 |         |   |                                 |   |         |                                |  |   |         |  
|Gross margin                                   |  |                                 | 160,750 |   |                                 |   | 148,522 |                                |  |   | 20,110  |  
|                                               |  |                                 |         |   |                                 |   |         |                                |  |   |         |  
|Operating expenses:                            |  |                                 |         |   |                                 |   |         |                                |  |   |         |  
|Research and development                       |  |                                 | 59,190  |   |                                 |   | 55,063  |                                |  |   | 20,590  |  
|Marketing and selling                          |  |                                 | 72,560  |   |                                 |   | 66,971  |                                |  |   | 23,324  |  
|General and administration                     |  |                                 | 22,940  |   |                                 |   | 20,919  |                                |  |   | 8,025   |  
|Amortization of intangible assets              |  |                                 | 1,378   |   |                                 |   | 1,126   |                                |  |   | 460     |  
|Special charges                                |  |                                 | 4,053   |   |                                 |   | 5,236   |                                |  |   | 119     |  
|In-process research and development            |  |                                 |        |   |                                 |   | 180     |                                |  |   |        |  
|                                               |  |                                 |         |   |                                 |   |         |                                |  |   |         |  
|Total operating expenses                       |  |                                 | 160,121 |   |                                 |   | 149,495 |                                |  |   | 52,518  |  
|                                               |  |                                 |         |   |                                 |   |         |                                |  |   |         |  
|Operating income (loss)                        |  |                                 | 629     |   |                                 |   | (973    | )                              |  |   | (32,408 | )
|Other income, net                              |  |                                 | 5,541   |   |                                 |   | 2,194   |                                |  |   | 2,728   |  
|Interest expense                               |  |                                 | (5,118  | ) |                                 |   | (12,269 | )                              |  |   | (1,707  | )
|                                               |  |                                 |         |   |                                 |   |         |                                |  |   |         |  
|Income (loss) before income taxes              |  |                                 | 1,052   |   |                                 |   | (11,048 | )                              |  |   | (31,387 | )
|Income tax expense (benefit)                   |  |                                 | 762     |   |                                 |   | (5,188  | )                              |  |   | (1,038  | )
|                                               |  |                                 |         |   |                                 |   |         |                                |  |   |         |  
|Net income (loss)                              |  | $                               | 290     |   |                                 | $ | (5,860  | )                              |  | $ | (30,349 | )
|                                               |  |                                 |         |   |                                 |   |         |                                |  |   |         |  
|Net income (loss) per share:                   |  |                                 |         |   |                                 |   |         |                                |  |   |         |  
|Basic                                          |  | $                               |        |   |                                 | $ | (0.07   | )                              |  | $ | (0.36   | )
|                                               |  |                                 |         |   |                                 |   |         |                                |  |   |         |  
|Diluted                                        |  | $                               |        |   |                                 | $ | (0.07   | )                              |  | $ | (0.36   | )
|                                               |  |                                 |         |   |                                 |   |         |                                |  |   |         |  
|Weighted average number of shares outstanding: |  |                                 |         |   |                                 |   |         |                                |  |   |         |  
|Basic                                          |  |                                 | 85,158  |   |                                 |   | 80,108  |                                |  |   | 84,590  |  
|                                               |  |                                 |         |   |                                 |   |         |                                |  |   |         |  
|Diluted                                        |  |                                 | 88,083  |   |                                 |   | 80,108  |                                |  |   | 84,590  |  
|                                               |  |                                 |         |   |                                 |   |         |                                |  |   |         |  

See accompanying notes to unaudited consolidated financial statements.



3



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##### Table of Contents

Mentor Graphics Corporation

Condensed Consolidated Balance Sheets

(Unaudited)



|                                                                                                                      |  |                     |           |                        |   |                       |  |   |          
|--------------------------------------------------------------------------------------------------------------------- |  | ------------------- | --------- | ---------------------- | - | --------------------- |  | - | ---------
|                                                                                                                      |  | As ofApril 30, 2007 |           | As ofDecember 31, 2006 |   | As ofJanuary 31, 2007
|In thousands                                                                                                          |  |                     |           |                        |   |                      
|Assets                                                                                                                |  |                     |           |                        |   |                       |  |   |          
|Current assets:                                                                                                       |  |                     |           |                        |   |                       |  |   |          
|Cash and cash equivalents                                                                                             |  | $                   | 98,473    |                        | $ | 83,031                |  | $ | 95,232   
|Short-term investments                                                                                                |  |                     | 24,403    |                        |   | 46,826                |  |   | 43,750   
|Trade accounts receivable, net of allowance for doubtful accounts of $5,087, $4,755 and $4,405, respectively          |  |                     | 278,403   |                        |   | 263,126               |  |   | 251,453  
|Other receivables                                                                                                     |  |                     | 8,937     |                        |   | 10,428                |  |   | 8,861    
|Inventory                                                                                                             |  |                     | 4,095     |                        |   | 2,882                 |  |   | 3,373    
|Prepaid expenses and other                                                                                            |  |                     | 19,518    |                        |   | 16,369                |  |   | 22,088   
|Deferred income taxes                                                                                                 |  |                     | 9,883     |                        |   | 12,549                |  |   | 10,199   
|                                                                                                                      |  |                     |           |                        |   |                       |  |   |          
|Total current assets                                                                                                  |  |                     | 443,712   |                        |   | 435,211               |  |   | 434,956  
|Property, plant and equipment, net of accumulated depreciation of $191,800, $182,791 and $184,519, respectively       |  |                     | 90,415    |                        |   | 86,100                |  |   | 86,956   
|Term receivables, long-term                                                                                           |  |                     | 126,891   |                        |   | 162,157               |  |   | 136,641  
|Goodwill                                                                                                              |  |                     | 370,072   |                        |   | 368,652               |  |   | 368,218  
|Intangible assets,net of accumulated amortization of $79,120, $73,097 and $74,700, respectively                       |  |                     | 22,227    |                        |   | 27,882                |  |   | 26,141   
|Deferred income taxes                                                                                                 |  |                     | 32,948    |                        |   | 20,947                |  |   | 29,963   
|Other assets                                                                                                          |  |                     | 20,104    |                        |   | 25,290                |  |   | 20,500   
|                                                                                                                      |  |                     |           |                        |   |                       |  |   |          
|Total assets                                                                                                          |  | $                   | 1,106,369 |                        | $ | 1,126,239             |  | $ | 1,103,375
|                                                                                                                      |  |                     |           |                        |   |                       |  |   |          
|Liabilities and Stockholders Equity                                                                                  |  |                     |           |                        |   |                       |  |   |          
|Current liabilities:                                                                                                  |  |                     |           |                        |   |                       |  |   |          
|Short-term borrowings                                                                                                 |  | $                   | 12,039    |                        | $ | 7,181                 |  | $ | 8,986    
|Accounts payable                                                                                                      |  |                     | 15,352    |                        |   | 20,122                |  |   | 19,304   
|Income taxes payable                                                                                                  |  |                     | 3,599     |                        |   | 45,521                |  |   | 45,955   
|Accrued payroll and related liabilities                                                                               |  |                     | 65,288    |                        |   | 105,009               |  |   | 86,843   
|Accrued liabilities                                                                                                   |  |                     | 34,940    |                        |   | 34,938                |  |   | 35,567   
|Deferred revenue                                                                                                      |  |                     | 145,864   |                        |   | 116,237               |  |   | 128,773  
|                                                                                                                      |  |                     |           |                        |   |                       |  |   |          
|Total current liabilities                                                                                             |  |                     | 277,082   |                        |   | 329,008               |  |   | 325,428  
|Notes payable                                                                                                         |  |                     | 246,450   |                        |   | 249,852               |  |   | 249,851  
|Other long-term liabilities                                                                                           |  |                     | 54,959    |                        |   | 14,312                |  |   | 14,047   
|                                                                                                                      |  |                     |           |                        |   |                       |  |   |          
|Total liabilities                                                                                                     |  |                     | 578,491   |                        |   | 593,172               |  |   | 589,326  
|                                                                                                                      |  |                     |           |                        |   |                       |  |   |          
|Commitments and contingencies (Note 15)                                                                               |  |                     |           |                        |   |                       |  |   |          
|Stockholders equity:                                                                                                 |  |                     |           |                        |   |                       |  |   |          
|Common stock, no par value, 200,000 shares authorized; 85,317, 83,542 and 84,819 issued and outstanding, respectively |  |                     | 453,095   |                        |   | 430,847               |  |   | 444,230  
|Retained earnings                                                                                                     |  |                     | 42,669    |                        |   | 72,728                |  |   | 42,379   
|Accumulated other comprehensive income                                                                                |  |                     | 32,114    |                        |   | 29,492                |  |   | 27,440   
|                                                                                                                      |  |                     |           |                        |   |                       |  |   |          
|Total stockholders equity                                                                                            |  |                     | 527,878   |                        |   | 533,067               |  |   | 514,049  
|                                                                                                                      |  |                     |           |                        |   |                       |  |   |          
|Total liabilities and stockholders equity                                                                            |  | $                   | 1,106,369 |                        | $ | 1,126,239             |  | $ | 1,103,375
|                                                                                                                      |  |                     |           |                        |   |                       |  |   |          

See accompanying notes to unaudited consolidated financial statements.



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Mentor Graphics Corporation

Condensed Consolidated Statements of Cash Flows

(Unaudited)



|                                                                                                   |  |                                 |         |   |                                 |   |          |                                |  |   |         |  
|-------------------------------------------------------------------------------------------------- |  | ------------------------------- | ------- | - | ------------------------------- | - | -------- | ------------------------------ |  | - | ------- | -
|                                                                                                   |  | Three MonthsEndedApril 30, 2007 |         |   | Three MonthsEndedMarch 31, 2006 |   |          | One MonthEndedJanuary 31, 2007 | 
|In thousands                                                                                       |  |                                 |         |   |                                 |   |          |                                | 
|Operating Cash Flows:                                                                              |  |                                 |         |   |                                 |   |          |                                |  |   |         |  
|Net income (loss)                                                                                  |  | $                               | 290     |   |                                 | $ | (5,860   | )                              |  | $ | (30,349 | )
|Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities: |  |                                 |         |   |                                 |   |          |                                |  |   |         |  
|Depreciation and amortization of property, plant and equipment                                     |  |                                 | 6,474   |   |                                 |   | 6,097    |                                |  |   | 2,436   |  
|Amortization                                                                                       |  |                                 | 4,988   |   |                                 |   | 4,867    |                                |  |   | 1,793   |  
|Write-off of debt issuance costs                                                                   |  |                                 | 62      |   |                                 |   | 2,154    |                                |  |   |        |  
|Gain on debt extinguishment                                                                        |  |                                 |        |   |                                 |   | (999     | )                              |  |   |        |  
|Stock based compensation                                                                           |  |                                 | 3,065   |   |                                 |   | 2,941    |                                |  |   | 1,053   |  
|Deferred income taxes                                                                              |  |                                 | (2,670  | ) |                                 |   | (1,027   | )                              |  |   | (6,664  | )
|Changes in other long-term liabilities                                                             |  |                                 | (1,531  | ) |                                 |   | (493     | )                              |  |   | (182    | )
|In-process research and development                                                                |  |                                 |        |   |                                 |   | 180      |                                |  |   |        |  
|Loss (gain) on disposal of property, plant and equipment, net                                      |  |                                 | 49      |   |                                 |   | 575      |                                |  |   | (10     | )
|Changes in operating assets and liabilities:                                                       |  |                                 |         |   |                                 |   |          |                                |  |   |         |  
|Trade accounts receivable                                                                          |  |                                 | (21,831 | ) |                                 |   | 21,275   |                                |  |   | 10,048  |  
|Prepaid expenses and other                                                                         |  |                                 | 1,592   |   |                                 |   | 844      |                                |  |   | (803    | )
|Term receivables, long-term                                                                        |  |                                 | 12,293  |   |                                 |   | 5,384    |                                |  |   | 24,906  |  
|Accounts payable and accrued liabilities                                                           |  |                                 | (27,515 | ) |                                 |   | (24,076  | )                              |  |   | (17,558 | )
|Income taxes payable                                                                               |  |                                 | (970    | ) |                                 |   | (5,909   | )                              |  |   | 704     |  
|Deferred revenue                                                                                   |  |                                 | 14,639  |   |                                 |   | 10,503   |                                |  |   | 13,258  |  
|                                                                                                   |  |                                 |         |   |                                 |   |          |                                |  |   |         |  
|Net cash (used in) provided by operating activities                                                |  |                                 | (11,065 | ) |                                 |   | 16,456   |                                |  |   | (1,368  | )
|                                                                                                   |  |                                 |         |   |                                 |   |          |                                |  |   |         |  
|Investing Cash Flows:                                                                              |  |                                 |         |   |                                 |   |          |                                |  |   |         |  
|Proceeds from sales and maturities of short-term investments                                       |  |                                 | 23,248  |   |                                 |   | 25,804   |                                |  |   | 18,810  |  
|Purchases of short-term investments                                                                |  |                                 | (3,901  | ) |                                 |   | (31,435  | )                              |  |   | (15,734 | )
|Purchases of property, plant and equipment                                                         |  |                                 | (9,062  | ) |                                 |   | (3,222   | )                              |  |   | (3,677  | )
|Acquisitions of businesses and equity interests                                                    |  |                                 | (2,248  | ) |                                 |   | (4,165   | )                              |  |   | 218     |  
|                                                                                                   |  |                                 |         |   |                                 |   |          |                                |  |   |         |  
|Net cash provided by (used in) investing activities                                                |  |                                 | 8,037   |   |                                 |   | (13,018  | )                              |  |   | (383    | )
|                                                                                                   |  |                                 |         |   |                                 |   |          |                                |  |   |         |  
|Financing Cash Flows:                                                                              |  |                                 |         |   |                                 |   |          |                                |  |   |         |  
|Proceeds from issuance of common stock                                                             |  |                                 | 5,800   |   |                                 |   | 7,859    |                                |  |   | 12,134  |  
|Excess tax benefit from share options exercised                                                    |  |                                 |        |   |                                 |   |         |                                |  |   | 196     |  
|Net increase (decrease) in short-term borrowings                                                   |  |                                 | 2,944   |   |                                 |   | (812     | )                              |  |   | 1,908   |  
|Debt issuance costs                                                                                |  |                                 |        |   |                                 |   | (5,750   | )                              |  |   |        |  
|Proceeds from long-term notes payable                                                              |  |                                 |        |   |                                 |   | 200,000  |                                |  |   |        |  
|Repayment of long-term notes payable                                                               |  |                                 | (3,401  | ) |                                 |   | (204,193 | )                              |  |   |        |  
|                                                                                                   |  |                                 |         |   |                                 |   |          |                                |  |   |         |  
|Net cash provided by (used in) financing activities                                                |  |                                 | 5,343   |   |                                 |   | (2,896   | )                              |  |   | 14,238  |  
|                                                                                                   |  |                                 |         |   |                                 |   |          |                                |  |   |         |  
|Effect of exchange rate changes on cash and cash equivalents                                       |  |                                 | 926     |   |                                 |   | 151      |                                |  |   | (286    | )
|                                                                                                   |  |                                 |         |   |                                 |   |          |                                |  |   |         |  
|Net change in cash and cash equivalents                                                            |  |                                 | 3,241   |   |                                 |   | 693      |                                |  |   | 12,201  |  
|Cash and cash equivalents at beginning of period                                                   |  |                                 | 95,232  |   |                                 |   | 74,653   |                                |  |   | 83,031  |  
|                                                                                                   |  |                                 |         |   |                                 |   |          |                                |  |   |         |  
|Cash and cash equivalents at end of period                                                         |  | $                               | 98,473  |   |                                 | $ | 75,346   |                                |  | $ | 95,232  |  
|                                                                                                   |  |                                 |         |   |                                 |   |          |                                |  |   |         |  

See accompanying notes to unaudited consolidated financial statements.



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MENTOR GRAPHICS CORPORATION

Notes to Unaudited Condensed Consolidated Financial Statements

(In thousands, except per share amounts)



|(1) | GeneralThe accompanying unaudited condensed consolidated financial statements have been prepared in conformity with United States (U.S.) generally accepted
accounting principles and reflect all material normal recurring adjustments. However, certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with U.S. generally accepted accounting
principles have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission. In the opinion of management, the condensed consolidated financial statements include adjustments necessary for a fair
presentation of the results of the interim periods presented. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto included in our Annual Report on Form 10-K
for the fiscal year ended December 31, 2006.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The preparation of condensed consolidated financial statements in
conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the
consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.



|(2) | Change in Fiscal YearOn July 19, 2006, the Board of Directors adopted a new fiscal year end. Our new fiscal year will end on January 31, beginning with
the fiscal year ending January 31, 2008, which we refer to as fiscal 2008. We have included information covering the transition period from January 1, 2007 to January 31, 2007 in this Form 10-Q pursuant to Rule 13a-10 of the
Securities and Exchange Act of 1934, as amended. We did not experience a significant amount of business activity or product shipment in January 2007 and have reported a loss for that period. The low level of business activity and product shipment
resulted in part from the historical pattern of low levels of business activity in January, and in part because we did not implement significant sales incentive compensation programs for that one-month period.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

References in this Form 10-Q to the first quarter of fiscal 2008 represent the three months ended April 30, 2007. References in this Form 10Q
to the first quarter of 2006 represent the three months ended March 31, 2006. We have not submitted financial information for the three months ending April 30, 2006 in this Form 10Q because the information is not practical or cost
beneficial to prepare. We believe that the first quarter of 2006 provides a meaningful comparison to the first quarter of fiscal 2008. We do not believe that there are any meaningful factors, seasonal or otherwise, that would impact the
comparability of information or trends, if results for the three months ended April 30, 2006 were presented in lieu of results for the first quarter of 2006.



|(3) | Summary of Significant Accounting Policies 
|--- | --------------------------------------------

Principles of Consolidation

The condensed consolidated financial statements include the financial statements of us and our
wholly owned and majority-owned subsidiaries. All intercompany accounts and transactions are eliminated in consolidation.

We do not have
off-balance sheet arrangements, financings or other relationships with unconsolidated entities or other persons, also known as special purpose entities. In the ordinary course of business, we lease certain real properties, primarily field sales
offices, research and development facilities and equipment, as described in Note 15.

Revenue Recognition

We report revenue in two categories based upon how the revenue is generated: (i) system and software and (ii) service and support.

System and software revenues  we derive system and software revenues from the sale of licenses of software products and emulation hardware
products. We primarily license our products using two different license types:

1. Term licenses  This license type is primarily used
for software sales and provides the customer with a right to use a fixed list of software products for a specified time period, typically three years with payments spread over the license term, and do not provide the customer with the right to use
the products after the end of the term. Term license arrangements may allow the customer to share products between multiple locations and reconfigure product usage from the fixed list of products at regular intervals during the license term. Product
revenue from term license arrangements is generally recognized upon product delivery and start of the license term. In a term license agreement where we provide the customer with rights to unspecified or unreleased future products, revenue is
recognized ratably over the license term.



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2. Perpetual licenses  This license type is used for both software and emulation hardware sales and
provides the customer with the right to use the product in perpetuity and typically does not provide for extended payment terms. Product revenue from perpetual license arrangements is generally recognized upon product delivery.

Service and support revenues  Service and support revenues consist of revenues from software and hardware post contract maintenance or
support services and professional services, which include consulting services, training services and other services. We record professional service revenue as the services are provided to the customer. Support services revenue is recognized ratably
over the support services term.

We apply the provisions of Statement of Position, or SOP, 97-2, Software Revenue Recognition,
as amended by SOP 98-9, Modification of SOP 97-2, Software Revenue Recognition, With Respect to Certain Transactions, to all product revenue transactions where the software is not incidental. We determine whether software product revenue
recognition is appropriate based upon the evaluation of whether the following four criteria have been met:

1. Persuasive evidence of an
arrangement exists  Generally, we use the customer signed contract as evidence of an arrangement for term licenses. For perpetual licenses, we use either a signed customer contract or a qualified customer purchase order as evidence of an
arrangement. For professional service engagements, we generally use a signed professional services agreement and a statement of work to evidence an arrangement. Sales through our distributors are evidenced by an agreement governing the relationship,
together with binding purchase orders from the distributor on a transaction-by-transaction basis.

2. Delivery has occurred  Software
and the corresponding access keys are generally delivered to customers electronically. Electronic delivery occurs when we provide the customer access to the software. We may also deliver the software on a compact disc. Our software license
agreements generally do not contain conditions for acceptance. With respect to emulation hardware, title is transferred to the customer upon shipment. We offer non-essential installation services for emulation hardware sales or the customer may
elect to perform the installation without assistance from us. Our emulation hardware product agreements generally do not contain conditions for acceptance.

3. Fee is fixed or determinable  We assess whether a fee is fixed or determinable at the outset of the arrangement, primarily based on the payment terms associated with the transaction. We have established a
history of collecting under the original contract with extended installment terms without providing concessions on payments, products or services. Additionally, for installment contracts, we determine that the fee is fixed or determinable if the
arrangement has a payment schedule that is within the term of the licenses and the payments are collected in equal or nearly equal installments, when evaluated on a cumulative basis. If the fee is not deemed to be fixed and determinable, revenue is
recognized as payments are received, which is also defined as due and payable.

4. Collectibility is probable  To recognize revenue,
we must judge collectibility of the arrangement fees on a customer-by-customer basis pursuant to a credit review policy. We typically sell to customers with whom there is a history of successful collection. We evaluate the financial position and a
customers ability to pay whenever an existing customer purchases new products, renews an existing arrangement or requests an increase in credit terms. For certain industries for which our products are not considered core to the industry or the
industry is generally considered troubled, we impose higher credit standards. If we determine that collectibility is not probable based upon our credit review process or the customers payment history, revenue is recognized as payments are
received.

Vendor-specific objective evidence of fair value (VSOE)  Our VSOE for certain product elements of an arrangement is based
upon the pricing in comparable transactions when the element is sold separately. VSOE for term and perpetual support services are primarily based upon customer renewal history where the services are sold separately. VSOE for professional services
are also based upon the price charged when the services are sold separately. VSOE for installation services for emulation hardware systems is established based upon prices charged where the services are sold separately.

Multiple element arrangements  For multiple element arrangements, VSOE must exist to allocate the total fee among all delivered and non-essential
undelivered elements of the arrangement. If undelivered elements of the arrangement are essential to the functionality of the product, revenue is deferred until the essential elements are delivered. If VSOE



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does not exist for one or more non-essential undelivered elements, revenue is deferred until such evidence does exist for the undelivered elements, or until
all elements are delivered, whichever is earlier. If VSOE of all non-essential undelivered elements exists but VSOE does not exist for one or more delivered elements, revenue is recognized using the residual method. Under the residual method,
revenue related to the undelivered elements is deferred based upon VSOE and the remaining portion of the arrangement fee is recognized as revenue for the delivered elements, assuming all other criteria for revenue recognition have been met. If we
could no longer establish VSOE for non-essential undelivered elements of multiple element arrangements, revenue would be deferred until all elements are delivered or VSOE is established for the undelivered elements, whichever is earlier.

Reclassifications

Certain
immaterial reclassifications have been made in the accompanying consolidated financial statements for the three months ended March 31, 2006 to conform to the presentation for the three months ended April 30, 2007. Specifically, we made
reclassifications on the Condensed Consolidated Statements of Operations between Other Income, Net and Interest Expense.



|(4) | Accounting for Stock-Based CompensationOn January 1, 2006, we adopted the provisions of Statement of Financial Accounting Standards (SFAS) No. 123
(revised 2004), Share-Based Payment (SFAS 123(R)), which requires the measurement of stock-based compensation expense for all share-based payment awards made to employees for services. In March 2005, the SEC issued SAB
No. 107, which provided supplemental implementation guidance for SFAS 123(R).
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Stock Option Plans and Stock Plan

We have three common stock option plans which provide for the granting of incentive stock options (ISOs), nonqualified stock options
(NQSOs), stock appreciation rights (SARs), restricted stock, restricted stock units, and performance-based awards. The three stock option plans are administered by the Compensation Committee of the Board of Directors and permit accelerated vesting
of outstanding options upon the occurrence of certain changes in control of the company.

We also have a stock plan that provides for the
sale of common stock to officers, key employees, and non-employee consultants of us and our subsidiaries. This plan allows for shares to be awarded at no purchase price as a stock bonus, or with a purchase price as a non-qualified stock option.

Options under all four plans generally expire ten years from the date of grant and become exercisable over four years from the date of
grant or from the commencement of employment at prices generally not less than the fair market value at the date of grant. At April 30, 2007, 8,982 shares were available for future grant.

Stock options outstanding, the weighted average exercise price and transactions involving the stock option plans are summarized as follows:



|                             |  |        |   |  |       |      
|---------------------------- |  | ------ | - |  | ----- | -----
|                             |  | Shares |   |  | Price
|Balance at December 31, 2006 |  | 19,094 |   |  | $     | 13.75
|Granted                      |  | 7      |   |  | $     | 18.87
|Exercised                    |  | (473   | ) |  | $     | 10.80
|Forfeited                    |  | (50    | ) |  | $     | 11.07
|Expired                      |  | (9     | ) |  | $     | 17.87
|                             |  |        |   |  |       |      
|Balance at January 31, 2007  |  | 18,569 |   |  | $     | 13.83
|Granted                      |  | 107    |   |  | $     | 17.33
|Exercised                    |  | (498   | ) |  | $     | 9.97 
|Forfeited                    |  | (77    | ) |  | $     | 11.71
|Expired                      |  | (44    | ) |  | $     | 19.24
|                             |  |        |   |  |       |      
|Balance at April 30, 2007    |  | 18,057 |   |  | $     | 13.95
|                             |  |        |   |  |       |      



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Employee Stock Purchase Plans

We have an Employee Stock Purchase Plan (ESPP) for U.S. employees and an ESPP for certain foreign subsidiary employees. The ESPPs generally provide for
overlapping two-year offerings starting every six months on January 1 and July 1 of each year with purchases every six months during those offerings. Each eligible employee may purchase up to sixteen hundred shares of stock on each
purchase date at prices no less than 85% of the lesser of the fair market value of the shares at the beginning of the two-year offering period or on the applicable purchase date, not to exceed a total of $25 of fair market value per calendar year.
At April 30, 2007, 4,261 shares remain available for future purchase under the ESPPs.

Stock-based Compensation Expense

Stock-based compensation expense is recorded based on the grant-date fair value estimated in accordance with the provisions of SFAS 123(R).
We measure stock-based compensation cost at the grant date, based on the fair value of the award, and recognize the expense on a straight-line basis over the employees requisite service period. We have recorded $3,065, $2,941, and $1,053 of
stock-based compensation expense for the three months ended April 30, 2007 and March 31, 2006 and for the one month ended January 31, 2007, respectively. In accordance with SFAS 123(R), we will present tax benefits from the
exercise of stock options that exceed the tax benefits for those options previously recorded under SFAS 123(R) as a financing activity in the consolidated statements of cash flows. We recorded $196 of excess tax benefits for the one month period
ended January 31, 2007. We did not record any excess tax benefits for the three months ended April 30, 2007 and March 31, 2006.

We estimate the fair value of stock options and purchase rights under our ESPPs in accordance with SFAS 123(R) using a Black-Scholes option-pricing model. The Black-Scholes option-pricing model incorporates several highly subjective
assumptions including expected volatility, expected term and interest rates. Elements we include in reaching our determination of expected volatility are: (i) historical volatility of our shares, (ii) historical volatility of shares
of comparable companies, (iii) implied volatility of the option features in our Debentures, and (iv) implied volatility of traded options of comparable companies. The expected term of our stock options is based on historical experience.
Using the Black-Scholes methodology, the weighted average fair value of options granted was $8.61, $5.50, and $9.41 per share during the three months ended April 30, 2007 and March 31, 2006 and during the one month ended January 31,
2007, respectively. The weighted average estimated fair value of purchase rights under the ESPPs was $4.28, $5.24, and $4.28 during the three months ended April 30, 2007 and March 31, 2006 and during the one month ended January 31,
2007, respectively. The calculations used the following assumptions:



|                         |  |                                 |   |  |                                 |   |  |                                |  
|------------------------ |  | ------------------------------- | - |  | ------------------------------- | - |  | ------------------------------ | -
|Stock Option Plans       |  | Three MonthsEndedApril 30, 2007 |   |  | Three MonthsEndedMarch 31, 2006 |   |  | One MonthEndedJanuary 31, 2007 |  
|Risk-free interest rate  |  | 4.6                             | % |  | 4.5                             | % |  | 4.8                            | %
|Dividend yield           |  | 0                               | % |  | 0                               | % |  | 0                              | %
|Expected life (in years) |  | 4.5                             |   |  | 4.5                             |   |  | 4.5                            |  
|Volatility               |  | 55                              | % |  | 55                              | % |  | 55                             | %



|                              |  |                                 |   |  |                                 |   |  |                                |  
|----------------------------- |  | ------------------------------- | - |  | ------------------------------- | - |  | ------------------------------ | -
|Employee Stock Purchase Plans |  | Three MonthsEndedApril 30, 2007 |   |  | Three MonthsEndedMarch 31, 2006 |   |  | One MonthEndedJanuary 31, 2007 |  
|Risk-free interest rate       |  | 5.0                             | % |  | 4.6                             | % |  | 5.1                            | %
|Dividend yield                |  | 0                               | % |  | 0                               | % |  | 0                              | %
|Expected life (in years)      |  | 1.25                            |   |  | 1.25                            |   |  | 1.25                           |  
|Volatility                    |  | 45                              | % |  | 45                              | % |  | 45                             | %



|(5) | Net Income (Loss) Per ShareBasic net income (loss) per share is computed using the weighted average number of common shares outstanding during the period.
Diluted net income (loss) per share is computed using the weighted average number of common shares and dilutive potential common shares outstanding during the period. Potentially dilutive common shares consist of common shares issuable upon exercise
of employee stock options, purchase rights from ESPPs and warrants using the treasury stock method. Potentially dilutive common shares also consist of common shares issuable upon conversion of the convertible subordinated notes and convertible
subordinated debentures, if dilutive.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The following provides the computation of basic and diluted net income (loss) per
share:



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|                                                                                                          |  |                                 |        |                                 |   |        |                                |  |   |         |  
|--------------------------------------------------------------------------------------------------------- |  | ------------------------------- | ------ | ------------------------------- | - | ------ | ------------------------------ |  | - | ------- | -
|                                                                                                          |  | Three monthsendedApril 30, 2007 |        | Three monthsendedMarch 31, 2006 |   |        | One monthendedJanuary 31, 2007 | 
|Net income (loss)                                                                                         |  | $                               | 290    |                                 | $ | (5,860 | )                              |  | $ | (30,349 | )
|Weighted average shares used to calculate basic net income (loss) per share                               |  |                                 | 85,158 |                                 |   | 80,108 |                                |  |   | 84,590  |  
|Employee stock options and employee stock purchase plan                                                   |  |                                 | 2,925  |                                 |   |       |                                |  |   |        |  
|                                                                                                          |  |                                 |        |                                 |   |        |                                |  |   |         |  
|Weighted average common and potential common shares used to calculate diluted net income (loss) per share |  |                                 | 88,083 |                                 |   | 80,108 |                                |  |   | 84,590  |  
|                                                                                                          |  |                                 |        |                                 |   |        |                                |  |   |         |  
|Basic net income (loss) per share                                                                         |  | $                               |       |                                 | $ | (0.07  | )                              |  | $ | (0.36   | )
|                                                                                                          |  |                                 |        |                                 |   |        |                                |  |   |         |  
|Diluted net income (loss) per share                                                                       |  | $                               |       |                                 | $ | (0.07  | )                              |  | $ | (0.36   | )
|                                                                                                          |  |                                 |        |                                 |   |        |                                |  |   |         |  

Options and warrants to purchase 8,120, 20,283 and 18,830 shares of common stock for the three
months ended April 30, 2007 and March 31, 2006 and the one month ended January 31, 2007, respectively, were excluded from the computation of diluted earnings per share. The options and warrants were anti-dilutive either because we
incurred a net loss for the period, the warrant price was greater than the average market price during the period, or the option was determined to be anti-dilutive as a result of applying the treasury stock method in accordance with SFAS 128,
Earnings per Share.

The effect of the conversion of our 6 7/8% Convertible Subordinated Notes due 2007, the Floating Rate Convertible Subordinated Debentures due 2023, and the
6.25% Convertible Subordinated Debentures due 2026 for the three months ended April 30, 2007 and March 31, 2006 and the one month ended January 31, 2007 was anti-dilutive and therefore not included in the computation of diluted
earnings per share. If the 6 7/8% Notes had been dilutive, our net income (loss) per share would have included
additional earnings, primarily from the reduction of interest expense, of $1,693 and additional incremental shares of 6,133 for the three months ended March 31, 2006. If the Floating Rate Debentures had been dilutive, our net income (loss) per
share would have included additional earnings of $550, $1,079 and $203 for the three months ended April 30, 2007 and March 31, 2006 and the one month ended January 31, 2007, respectively, and incremental shares of 2,049, 4,454 and
2,130 for the three months ended April 30, 2007 and March 31, 2006 and the one month ended January 31, 2007, respectively. In accordance with SFAS 128, Earnings per Share, we presume that the 6.25% Debentures will be
settled in common stock for purposes of calculating the dilutive effect of the 6.25% Debentures. If the 6.25% Debentures had been dilutive, additional earnings of $2,061, $643 and $688 and incremental shares of 116, 54 and 290 would have been
included in the calculation of net income (loss) per share for the three months ended April 30, 2007 and March 31, 2006 and the one month ended January 31, 2007, respectively. The conversion features of the 6.25% Debentures, which
allow for settlement in cash, common stock, or a combination of cash and common stock, are further described in Note 7, Long-Term Notes Payable.



|(6) | Short-Term Borrowings In June 2005, we entered into a syndicated, senior, unsecured revolving credit facility that replaced an existing three-year revolving
credit facility. Borrowings under the facility are permitted to a maximum of $120,000. The facility is a four-year revolving credit facility, which terminates on June 1, 2009. Under this facility, we have the option to pay interest based on
LIBOR with varying maturities which are commensurate with the borrowing period selected by us, plus a spread of between 1.0% and 1.6% or prime plus a spread of between 0.0% and 0.6%, based on a pricing grid tied to a financial covenant. As a result,
our interest expense associated with borrowings under this credit facility will vary with market interest rates. In addition, commitment fees are payable on the unused portion of the credit facility at rates between 0.25% and 0.35% based on a
pricing grid tied to a financial covenant. The facility contains certain financial and other covenants, including financial covenants requiring the maintenance of specified liquidity ratios, leverage ratios and minimum tangible net worth. We had no
borrowings during the first four months of 2007 and during the year 2006 against this credit facility and had no balance outstanding at April 30, 2007, December 31, 2006 or January 31, 2007.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Other short-term borrowings at April 30, 2007 included $7,823 in amounts collected from customers on receivables previously sold on a non-recourse
basis to financial institutions which will be remitted to the financial institutions during the second quarter of fiscal 2008. Other short-term borrowings at December 31, 2006 and January 31, 2007 included $1,938 and $4,488, respectively
in amounts collected from customers on receivables previously sold on a non-recourse basis to financial institutions which were remitted to the financial institutions prior to April 30, 2007.



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Other short-term borrowings also included borrowings on multi-currency lines of credit, capital leases
and other borrowings. Interest rates are generally based on the applicable countrys prime lending rate, depending on the currency borrowed. Other short-term borrowings of $4,216, $5,243 and $4,498 were outstanding under these facilities at
April 30, 2007, December 31, 2006 and January 31, 2007, respectively.



|(7) | Long-Term Notes PayableLong-Term Notes Payable consisted of the following:
|--- | ---------------------------------------------------------------------------



|                                  |  |                     |         |                        |   |                       |  |   |        
|--------------------------------- |  | ------------------- | ------- | ---------------------- | - | --------------------- |  | - | -------
|                                  |  | As ofApril 30, 2007 |         | As ofDecember 31, 2006 |   | As ofJanuary 31, 2007
|6.25% Debentures due 2026         |  | $                   | 200,000 |                        | $ | 200,000               |  | $ | 200,000
|Floating Rate Debentures due 2023 |  |                     | 46,450  |                        |   | 49,850                |  |   | 49,850 
|Other                             |  |                     |        |                        |   | 2                     |  |   | 1      
|                                  |  |                     |         |                        |   |                       |  |   |        
|Total Long-Term Notes Payable     |  | $                   | 246,450 |                        | $ | 249,852               |  | $ | 249,851
|                                  |  |                     |         |                        |   |                       |  |   |        

6.25% Debentures due 2026: In March
2006, we issued $200,000 of 6.25% Convertible Subordinated Debentures due 2026 (6.25% Debentures) in a private offering pursuant to Securities Act Rule 144A. Also in March 2006, we used the net proceeds of $194,250 from the sale of the 6.25%
Debentures plus $14,317 from our cash balances to retire the 6 7/8% Convertible Subordinated Notes due 2007 and
to retire a portion of the Floating Rate Convertible Subordinated Debentures due 2023. The 6.25% Debentures have been registered with the SEC for resale under the Securities Act of 1933. Interest on the 6.25% Debentures is payable semi-annually in
March and September. The 6.25% Debentures are convertible, under certain circumstances, into our common stock at a conversion price of $17.968 per share for a total of 11,131 shares. These circumstances generally include (a) the market price of
our common stock exceeding 120% of the conversion price, (b) the market price of the 6.25% Debentures declining to less than 98% of the value of the common stock into which the 6.25% Debentures are convertible, (c) a call for the
redemption of the 6.25% Debentures, (d) specified distributions to holders of our common stock, (e) if a fundamental change, such as a change of control, occurs or (f) during the ten trading days prior to, but not on, the maturity
date. Upon conversion, in lieu of shares of our common stock, for each $1,000 principal amount of 6.25% Debentures a holder will receive an amount of cash equal to the lesser of (i) $1,000 or (ii) the conversion value of the number of
shares of our common stock equal to the conversion rate. If such conversion value exceeds $1,000, we will also deliver, at our election, cash or common stock or a combination of cash and common stock with a value equal to the excess. If a holder
elects to convert its 6.25% Debentures in connection with a fundamental change which occurs prior to March 6, 2011, the holder will also be entitled to receive a make whole premium upon conversion in some circumstances. The 6.25% Debentures
rank pari passu with the Floating Rate Convertible Subordinated Debentures due 2023. Some or all of the 6.25% Debentures may be redeemed by us for cash on or after March 6, 2011. Some or all of the 6.25% Debentures may be redeemed at the option
of the holder for cash on March 1, 2013, 2016 or 2021.

Floating Rate Debentures due 2023: In August 2003, we issued
$110,000 of Floating Rate Convertible Subordinated Debentures due 2023 (Floating Rate Debentures) in a private offering pursuant to SEC Rule 144A. The Floating Rate Debentures have been registered with the SEC for resale under the Securities Act of
1933 fulfilling the requirement of the related registration rights agreement. Interest on the Floating Rate Debentures is payable quarterly in February, May, August and November at a variable interest rate equal to 3-month LIBOR plus 1.65%. The
effective interest rate was 7.01%, 6.18% and 7.02% for the three months ended April 30, 2007 and March 31, 2006, and one month ended January 31, 2007, respectively. The Floating Rate Debentures are convertible, under certain
circumstances, into our common stock at a conversion price of $23.40 per share, for a total of 1,985 shares as of April 30, 2007. These circumstances generally include (i) the market price of our common stock exceeding 120% of the
conversion price, (ii) the market price of the Floating Rate Debentures declining to less than 98% of the value of the common stock into which the Floating Rate Debentures are convertible or (iii) a call for redemption of the Floating Rate
Debentures or certain other corporate transactions. The conversion price may be adjusted based on certain future transactions, such as stock splits or stock dividends. Some or all of the Floating Rate Debentures may be redeemed by us for cash on or
after August 6, 2007. Some or all of the Floating Rate Debentures may be redeemed at the option of the holder for cash on August 6, 2010, 2013 or 2018. During 2007, we purchased on the open market and retired Floating Rate Debentures with
a principal balance of $3,400 for a total purchase price of $3,502. As a result, a principal amount of $46,450 remains outstanding as of April 30, 2007. In connection with this purchase, during the three months ended April 30, 2007, we
incurred a before tax net loss on the early extinguishment of debt of $164, which included a $102 premium on the repurchased Floating Rate Debentures and a write-off of $62 of a portion of unamortized deferred debt issuance costs.

6 7/8% Notes due 2007: In March 2006, we used a portion of the proceeds from the issuance of the 6.25% Debentures to retire the outstanding
balance of $171,500 of the 6 7/8% Convertible Subordinated Notes (Notes) due 2007. In connection with this
retirement, we incurred before tax expenses for the early extinguishment of debt of $6,082. Expenses included $4,716 for the call premium on the Notes and $1,366 for the write-off of unamortized deferred debt issuance costs.



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Other long-term notes payable include multi-currency notes payable and capital leases. Interest rates are
generally based on the applicable countrys prime lending rate, depending on the currency borrowed. There were no other long-term notes payable outstanding under these agreements as of April 30, 2007. Other long-term notes payable of $2
and $1 were outstanding under these agreements at December 31, 2006 and January 31, 2007, respectively.



|(8) | Supplemental Cash Flow InformationThe following provides additional information concerning supplemental disclosures of cash flow activities:
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------



|               |  |                                 |       |                                 |   |                                |  |   |    
|-------------- |  | ------------------------------- | ----- | ------------------------------- | - | ------------------------------ |  | - | ---
|               |  | Three monthsendedApril 30, 2007 |       | Three monthsendedMarch 31, 2006 |   | One monthendedJanuary 31, 2007
|Cash paid for: |  |                                 |       |                                 |   |                                |  |   |    
|Interest (1)   |  | $                               | 7,982 |                                 | $ | 11,832                         |  | $ | 240
|Income taxes   |  | $                               | 4,268 |                                 | $ | 1,991                          |  | $ | 916



| | (1) | Cash paid for interest for the three months ended April 30, 2007, included (i) $102 for the premium on the Floating Rate Debentures and (ii) $19 in interest accrued
to the date of retirement of the Floating Rate Debentures. Refer to Note 7, Long-Term Notes Payable for more information regarding the retirement of the Floating Rate Debentures.
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(9) | Comprehensive Income (Loss)The following provides a summary of comprehensive income (loss):
|--- | --------------------------------------------------------------------------------------------



|                                                           |  |                                 |       |   |                                 |   |        |                                |  |   |         |  
|---------------------------------------------------------- |  | ------------------------------- | ----- | - | ------------------------------- | - | ------ | ------------------------------ |  | - | ------- | -
|                                                           |  | Three monthsendedApril 30, 2007 |       |   | Three monthsendedMarch 31, 2006 |   |        | One monthendedJanuary 31, 2007 | 
|Net income (loss)                                          |  | $                               | 290   |   |                                 | $ | (5,860 | )                              |  | $ | (30,349 | )
|Change in pension liability                                |  |                                 |      |   |                                 |   |       |                                |  |   | 16      |  
|Change in unrealized gain (loss) on derivative instruments |  |                                 | (595  | ) |                                 |   | 1,035  |                                |  |   | (237    | )
|Change in accumulated translation adjustment               |  |                                 | 5,269 |   |                                 |   | 1,613  |                                |  |   | (1,831  | )
|                                                           |  |                                 |       |   |                                 |   |        |                                |  |   |         |  
|Comprehensive income (loss)                                |  | $                               | 4,964 |   |                                 | $ | (3,212 | )                              |  | $ | (32,401 | )
|                                                           |  |                                 |       |   |                                 |   |        |                                |  |   |         |  



|(10) | Special ChargesThe following is a summary of the major elements of the special charges:
|---- | ----------------------------------------------------------------------------------------



|                             |  |                                 |       |   |                                 |   |                                |  |   |    
|---------------------------- |  | ------------------------------- | ----- | - | ------------------------------- | - | ------------------------------ |  | - | ---
|                             |  | Three monthsendedApril 30, 2007 |       |   | Three monthsendedMarch 31, 2006 |   | One monthendedJanuary 31, 2007
|Excess leased facility costs |  | $                               | (16   | ) |                                 | $ | 863                            |  | $ |   
|Employee severance           |  |                                 | 3,969 |   |                                 |   | 3,592                          |  |   | 113
|Other                        |  |                                 | 100   |   |                                 |   | 781                            |  |   | 6  
|                             |  |                                 |       |   |                                 |   |                                |  |   |    
|Total special charges        |  | $                               | 4,053 |   |                                 | $ | 5,236                          |  | $ | 119
|                             |  |                                 |       |   |                                 |   |                                |  |   |    

During the three months ended April 30, 2007, we recorded special charges of $4,053. These
charges primarily consisted of costs incurred for employee terminations and are due to our reduction of personnel resources driven by modifications of business strategy or business emphasis.

The reduction of excess leased facility costs of $16 during the three months ended April 30, 2007 resulted from the termination of an abandoned
facility lease in a lease buyout. The cost of the lease buyout was less than the remaining balance of the accrual, resulting in an adjustment to special charges.

We rebalanced our workforce by 101 employees during the three months ended April 30, 2007. The reduction impacted several employee groups. Employee severance costs of $3,969 included severance benefits, notice
pay and outplacement services. The total rebalance charge represents the aggregate of numerous unrelated rebalance plans, none of which was individually material to our financial position or results of operations. Termination benefits were
communicated to the affected employees prior to the end of the quarter in which the charge was recorded. Approximately 57% of these costs were paid during the quarter and we expect to pay the remainder during the fiscal year ending January 31,
2008. There have been no significant modifications to the amount of these charges.



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Other special charges for the three months ended April 30, 2007 included fees of $100 for the
termination of a service agreement related to a subsidiary that was legally merged with one of our other subsidiaries located in the same country.

During the three months ended March 31, 2006, we recorded special charges of $5,236. These charges primarily consisted of costs incurred for employee terminations and are due to our reduction of personnel resources driven by
modifications of business strategy or business emphasis.

Excess leased facility costs of $863 during the three months ended March 31,
2006 primarily includes $909 of non-cancelable lease payments, net of sublease income, related to the abandonment of a facility in Europe. Non-cancelable lease payments for the excess leased facility space will be paid over eleven years. Excess
leased facility costs were offset by $46 of net costs related to the restoration of two facilities in Europe.

We rebalanced our workforce
by 67 employees during the three months ended March 31, 2006. The reduction impacted several employee groups. Employee severance costs of $3,592 included severance benefits, notice pay and outplacement services. The total rebalance charge
represents the aggregate of numerous unrelated rebalance plans, none of which was individually material to our financial position or results of operations. Termination benefits were communicated to the affected employees prior to the end of the
quarter in which the charge was recorded. The majority of these costs were paid during the year ended December 31, 2006. There have been no significant modifications to the amount of these charges.

Other special charges for the three months ended March 31, 2006 of $781 included a loss of $628 for the disposal of property and equipment related to
the discontinuation of an intellectual property line, $77 for terminated acquisitions that were no longer viable and $76 for other costs.

Included throughout the above special charges for the three months ended March 31, 2006 are costs of $1,613 incurred as a result of actions related to the discontinuation of one of our intellectual property product lines. These costs
included $909 in non-cancelable lease payments, net of sublease income, related to the abandonment of excess leased facility space in Europe. Other costs incurred in relation to the product-line discontinuation included a loss of $628 on the
abandonment or disposal of property and equipment primarily related to leasehold improvements and $76 for other costs.

During the month
ended January 31, 2007, we recorded special charges of $119. These charges primarily consisted of costs incurred for employee terminations and are due to our reduction of personnel resources driven by modifications of business strategy or
business emphasis.

We rebalanced our workforce by three employees during the month ended January 31, 2007. The reduction impacted
several employee groups. Employee severance costs of $113 included severance benefits, notice pay and outplacement services. The total rebalance charge represents the aggregate of numerous unrelated rebalance plans, none of which was individually
material to our financial position or results of operations. Termination benefits were communicated to the affected employees prior to the end of the month in which the charge was recorded. The majority of these costs were paid during the quarter
ended April 30, 2007. There have been no significant modifications to the amount of these charges.

Other special charges for the month
ended January 31, 2007 included $6 for the write off of costs related to terminated acquisitions that were no longer viable.

Accrued
special charges are included in accrued liabilities and other long-term liabilities on the consolidated balance sheets. The following table shows changes in accrued special charges during the one month ended January 31, 2007:



|                                     |  |                                            |       |                                                                              |   |                                                    |  |   |                                              |   |  |   |      
|------------------------------------ |  | ------------------------------------------ | ----- | ---------------------------------------------------------------------------- | - | -------------------------------------------------- |  | - | -------------------------------------------- | - |  | - | -----
|                                     |  | Accrued SpecialCharges atDecember 31, 2006 |       | Charges during theone month endedJanuary 31, 2007(Excluding
AssetWrite-offs) |   | Payments duringthe one month endedJanuary 31, 2007 |  |   | Accrued SpecialCharges atJanuary 31, 2007(1)
|Employee severance and related costs |  | $                                          | 444   |                                                                              | $ | 113                                                |  | $ | (72                                          | ) |  | $ | 485  
|Excess leased facility costs         |  |                                            | 5,819 |                                                                              |   |                                                   |  |   | (194                                         | ) |  |   | 5,625
|Other costs                          |  |                                            | 29    |                                                                              |   | 6                                                  |  |   | (3                                           | ) |  |   | 32   
|                                     |  |                                            |       |                                                                              |   |                                                    |  |   |                                              |   |  |   |      
|Total                                |  | $                                          | 6,292 |                                                                              | $ | 119                                                |  | $ | (269                                         | ) |  | $ | 6,142
|                                     |  |                                            |       |                                                                              |   |                                                    |  |   |                                              |   |  |   |      



| | (1) | Of the $6,142 total accrued special charges at January 31, 2007, $3,971 represented the long-term portion of accrued lease termination fees and other facility costs, net of
sublease income. The remaining balance of $2,171 represented the short-term portion of accrued special charges.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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The following table shows changes in accrued special charges during the three months ended April 30,
2007:



|                                     |  |                                             |       |                                                                                 |   |       |                                                     |  |   |                                               |   |  |   |      
|------------------------------------ |  | ------------------------------------------- | ----- | ------------------------------------------------------------------------------- | - | ----- | --------------------------------------------------- |  | - | --------------------------------------------- | - |  | - | -----
|                                     |  | Accrued Special Charges at January 31, 2007 |       | Charges during the three months ended April 30, 2007(Excluding AssetWrite-offs) |   |       | Payments duringthe three months endedApril 30, 2007 |  |   | Accrued Special Charges at April 30, 2007 (1)
|Employee severance and related costs |  | $                                           | 485   |                                                                                 | $ | 3,969 |                                                     |  | $ | (2,562                                        | ) |  | $ | 1,892
|Excess leased facility costs         |  |                                             | 5,625 |                                                                                 |   | (16   | )                                                   |  |   | (917                                          | ) |  |   | 4,692
|Other costs                          |  |                                             | 32    |                                                                                 |   | 100   |                                                     |  |   | (100                                          | ) |  |   | 32   
|                                     |  |                                             |       |                                                                                 |   |       |                                                     |  |   |                                               |   |  |   |      
|Total                                |  | $                                           | 6,142 |                                                                                 | $ | 4,053 |                                                     |  | $ | (3,579                                        | ) |  | $ | 6,616
|                                     |  |                                             |       |                                                                                 |   |       |                                                     |  |   |                                               |   |  |   |      



| | (1) | Of the $6,616 total accrued special charges at April 30, 2007, $3,171 represented the long-term portion of accrued lease termination fees and other facility costs, net of
sublease income. The remaining balance of $3,445 represented the short-term portion of accrued special charges.
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(11) | Merger and Acquisition Related Charges In March 2007, we acquired the technology of Dynamic Soft Analysis, Inc., a privately held company based in Pittsburgh,
Pennsylvania that is a provider of BETAsoft thermal analysis software. We are integrating the acquired technology into our systems design division product offerings. The total purchase price including acquisition costs was $838. The excess of
tangible assets acquired over liabilities assumed was $4. The cost of the acquisition was allocated on the basis of the estimated fair value of assets acquired and liabilities assumed. The purchase accounting allocations resulted in goodwill of
$614, technology of $71, and other identified intangible assets of $149. The technology and the other identified intangible assets are being amortized to cost of revenues and operating expenses, respectively, over three years.
|---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

In January 2006, we acquired 100% of the shares of EverCAD Corporation, a privately held electronic design automation (EDA)
company based in Taiwan that specializes in advanced circuit simulation and analysis tools. We are integrating the acquired technology into our analog mixed signal verification product family. The total purchase price including acquisition costs was
$5,070. The excess of tangible assets acquired over liabilities assumed was $1,879. The cost of the acquisition was allocated on the basis of the estimated fair value of assets acquired and liabilities assumed. The purchase accounting allocations
resulted in a charge for in-process research and development of $180, goodwill of $1,894, technology of $1,100, and other identified intangible assets of $390, net of related deferred tax liability of $373. The technology and the other identified
intangible assets are being amortized to cost of revenues and operating expenses, respectively, over three years.

During the three months
ended April 30, 2007 and March 31, 2006 and the one month ended January 31, 2007, we recorded earn-outs based on related revenues derived from products and technologies acquired in current and prior years acquisitions of $354,
$251 and $64, respectively.

The separate results of operations for the acquisitions during the three months ended April 30, 2007 were
not material compared to our overall results of operations and accordingly pro forma financial statements of the combined entities have been omitted. The results of operations are included in our consolidated financial statements from the date of
acquisition forward.



|(12) | Other Income, Net  The following provides a summary of other income, net:
|---- | --------------------------------------------------------------------------



|                                        |  |                                 |       |   |                                 |   |        |                                |  |   |       |  
|--------------------------------------- |  | ------------------------------- | ----- | - | ------------------------------- | - | ------ | ------------------------------ |  | - | ----- | -
|                                        |  | Three monthsendedApril 30, 2007 |       |   | Three monthsendedMarch 31, 2006 |   |        | One monthendedJanuary 31, 2007 | 
|Interest income                         |  | $                               | 7,034 |   |                                 | $ | 5,209  |                                |  | $ | 2,493 |  
|Loss on sale of accounts receivable (1) |  |                                 | (846  | ) |                                 |   | (1,438 | )                              |  |   | (310  | )
|Gain (loss) on hedge ineffectiveness    |  |                                 | 2     |   |                                 |   | (1,046 | )                              |  |   | 38    |  
|Foreign exchange (loss) gain            |  |                                 | (413  | ) |                                 |   | (446   | )                              |  |   | 563   |  
|Other, net                              |  |                                 | (236  | ) |                                 |   | (85    | )                              |  |   | (56   | )
|                                        |  |                                 |       |   |                                 |   |        |                                |  |   |       |  
|Other income, net                       |  | $                               | 5,541 |   |                                 | $ | 2,194  |                                |  | $ | 2,728 |  
|                                        |  |                                 |       |   |                                 |   |        |                                |  |   |       |  



| | (1) | We have entered into agreements to sell qualifying accounts receivable from time to time to certain financing institutions on a non-recourse basis. During the three months ended
April 30, 2007 and March 31, 2006 and the one month ended January 31, 2007, we sold trade receivables in the amounts of $5,822, $7,818 and $3,440, respectively, and term receivables in the amounts of $7,319, $9,265 and $2,743,
respectively, for net proceeds of $12,295, $15,645 and $5,873, respectively.
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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|(13) | New Accounting StandardsFASB Interpretation No. 48, Accounting for Uncertainty in Income Taxes
|---- | -------------------------------------------------------------------------------------------------

We adopted FASB Interpretation No. 48, Accounting for Uncertainty in Income Taxes  an Interpretation of FASB Statement No. 109
(FIN 48) on February 1, 2007, the first day of fiscal 2008. FIN 48 clarifies the accounting and reporting for uncertainties in income tax law. This Interpretation prescribes a comprehensive model for the financial statement recognition,
measurement, presentation and disclosure of uncertain tax positions taken or expected to be taken in income tax returns.

The adoption of
FIN 48 did not have a cumulative effect on our retained earnings. Upon adoption, the liability for income taxes associated with uncertain tax positions at February 1, 2007 was $44,115. This liability can be reduced by $1,140 of offsetting tax
benefits associated with the correlative effects of deductible interest and potential state income tax adjustments. Our uncertain tax positions, if recognized, would favorably affect our effective tax rate. In addition, consistent with the
provisions of FIN 48, we reclassified $42,730 of income tax liabilities from current to non-current liabilities because payment of cash is not anticipated within one year of the balance sheet date. These non-current income tax liabilities are
recorded in other long-term liabilities in the Condensed Consolidated Balance Sheet.

Interest and penalties related to income tax
liabilities are included in income tax expense. The balance of accrued interest and penalties recorded in the Condensed Consolidated Balance Sheet at February 1, 2007 was $1,848.

We are subject to income taxes in the United States and in numerous foreign jurisdictions and in the ordinary course of business, there are many
transactions and calculations where the ultimate tax determination is uncertain. The statute of limitations for adjustments to our historic tax obligations will vary from jurisdiction to jurisdiction. In some cases it may be extended or be
unlimited. Further, attribute carryforwards may be subject to adjustment after the expiration of the statute of limitations of the year such attribute was originated. Our larger jurisdictions generally provide for a statute of limitation from three
to five years, noting the United States remains open for fiscal years 2002 and forward. We are currently under examination in various jurisdictions, including the United States, Germany, and Japan. The examinations are in different stages and timing
of their resolution is difficult to predict. The examination in the United States by the Internal Revenue Service (IRS) pertains to our 2002, 2003, 2004 and 2005 tax years. In March 2007, the IRS issued a Revenue Agents Report in which
adjustments were asserted totaling $146,600 of additional taxable income for 2002 through 2004. The adjustments primarily concern transfer pricing arrangements related to intellectual property rights acquired in acquisitions which were transferred
to a foreign subsidiary. We disagree with the IRSs adjustments and continue to vigorously defend our position.

We have reserves for
taxes to address potential exposures involving tax positions that are being challenged or that could be challenged by taxing authorities even though we believe that the positions we have taken are appropriate. We believe our tax reserves are
adequate to cover potential liabilities. The tax reserves are reviewed as circumstances warrant and adjusted as events occur that affect our potential liability for additional taxes. It is often difficult to predict the final outcome or timing of
resolution of any particular tax matter. Within the next twelve months, it is reasonably possible that events, such as the settlement of audits or the expiration of certain statute of limitations, may occur that would affect our reserves and
effective tax rate. Further, various events could cause us to re-evaluate our reserves. Accrued income tax-related interest and penalties for the quarter were $441.



|(14) | Derivative Instruments and Hedging ActivitiesWe are exposed to fluctuations in foreign currency exchange rates. To manage the volatility,
exposures are aggregated on a consolidated basis to take advantage of natural offsets. The primary exposures that do not currently have natural offsets are the Japanese yen where we are in a long position and the Euro and the British pound where we
are in a short position. More than half of our revenues and approximately one-third of our expenses were generated outside of the United States for the three months ended April 30, 2007 and the one month ended January 31, 2007. For the
three months ended April 30, 2007 and the one month ended January 31, 2007, approximately one-fourth of European and ninety percent of Japanese revenues were subject to exchange rate fluctuations as they were booked in local currencies.
Most large European revenue contracts are denominated and paid to us in the United States dollar while our European expenses, including substantial research and development operations, are paid in local currencies causing a short position in the
Euro and the British pound. In addition, we
|---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | experience greater inflows than outflows of Japanese yen as almost all Japanese-based customers pay us in local currency. While these exposures are
aggregated on a consolidated basis to take advantage of natural offsets, substantial exposure remains.
| | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

For exposures that
are not offset, we enter into short-term foreign currency forward and option contracts to partially offset these anticipated exposures. We formally document all relationships between foreign currency contracts and hedged items as well as our risk
management objectives and strategies for undertaking various hedge transactions. All hedges designated as cash flow hedges are linked to forecasted transactions, and we assess, both at inception of the hedge and on an ongoing basis, the
effectiveness of the foreign exchange contracts in offsetting changes in the cash flows of the hedged items. The effective portions of the net gains or losses on foreign currency contracts are reported as a component of accumulated other
comprehensive income in stockholders equity. Accumulated other comprehensive income associated with hedges of forecasted transactions is reclassified to the consolidated statement of operations in the same period as the forecasted transaction
occurs. We discontinue hedge accounting prospectively when it is determined that a foreign currency contract is not highly effective as a hedge under the requirements of SFAS No. 133, Accounting for Derivative Instruments and Hedging
Activities (SFAS 133). To the extent a forecasted transaction is no longer deemed probable of occurring, hedge accounting treatment is also discontinued prospectively and amounts deferred are reclassified to other income, net.

We had $328,455, $237,532 and $372,271 of notional value foreign currency forward and option contracts outstanding at April 30,
2007, December 31, 2006 and January 31, 2007, respectively. Notional amounts do not quantify risk or represent our assets or liabilities, but are used in the calculation of cash settlements under the contracts. The fair value of
foreign currency forward and option contracts, recorded in other receivables in the consolidated balance sheets, was $2,467, $3,096 and $1,438 at April 30, 2007, December 31, 2006 and January 31, 2007, respectively.

The following provides a summary of activity in accumulated other comprehensive income relating to our hedging program:



|                                             |  |                                 |        |   |                                 |   |       |                                |  |   |       |  
|-------------------------------------------- |  | ------------------------------- | ------ | - | ------------------------------- | - | ----- | ------------------------------ |  | - | ----- | -
|                                             |  | Three monthsendedApril 30, 2007 |        |   | Three monthsendedMarch 31, 2006 |   |       | One monthendedJanuary 31, 2007 | 
|Beginning balance                            |  | $                               | 1,596  |   |                                 | $ |      |                                |  | $ | 1,833 |  
|Changes in fair value of cash flow hedges    |  |                                 | 615    |   |                                 |   | 877   |                                |  |   | 243   |  
|Hedge ineffectiveness recognized in earnings |  |                                 | 2      |   |                                 |   | (2    | )                              |  |   | 38    |  
|Net (gain) loss transferred to earnings      |  |                                 | (1,212 | ) |                                 |   | 160   |                                |  |   | (518  | )
|                                             |  |                                 |        |   |                                 |   |       |                                |  |   |       |  
|Net unrealized gain                          |  | $                               | 1,001  |   |                                 | $ | 1,035 |                                |  | $ | 1,596 |  
|                                             |  |                                 |        |   |                                 |   |       |                                |  |   |       |  

The remaining balance in accumulated other comprehensive income at April 30, 2007 represents a
net unrealized gain on foreign currency contracts relating to hedges of forecasted revenues and expenses expected to occur during fiscal 2008. These amounts will be transferred to the consolidated statement of operations upon recognition of the
related revenue and recording of the respective expenses. We expect substantially all of the balance in accumulated other comprehensive income to be reclassified to the consolidated statement of operations within the next twelve months. We
transferred a deferred gain of $148, deferred loss of $165, and deferred gain of $26 to system and software revenues relating to foreign currency contracts hedging revenues for the three months ended April 30, 2007 and March 31, 2006 and
the one month ended January 31, 2007, respectively. We transferred a deferred gain of $1,064, $5 and $492 to operating expenses relating to foreign currency contracts hedging commission and other expenses for the three months ended
April 30, 2007 and March 31, 2006 and the one month ended January 31, 2007, respectively.

We enter into foreign currency
contracts to offset the earnings impact relating to the variability in exchange rates on certain short-term monetary assets and liabilities denominated in non-functional currencies. These foreign exchange contracts are not designated as hedges.
Changes in the fair value of these contracts are recognized currently in earnings in other income, net to offset the remeasurement of the related assets and liabilities.

In accordance with SFAS 133, we exclude changes in fair value relating to time value of foreign currency forward contracts from our assessment of hedge effectiveness. We recorded income relating to time value in other
income, net, of $556, $576 and $230 for the three months ended April 30, 2007 and March 31, 2006 and the one month ended January 31, 2007, respectively. We recorded expense related to time value in interest expense of $452, $680 and
$211 for the three months ended April 30, 2007 and March 31, 2006 and the one month ended January 31, 2007, respectively.



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##### Table of Contents

|(15) | Commitments and Contingencies
|---- | ------------------------------

Leases

We lease a majority of our field sales offices and research and development facilities under non-cancelable
operating leases.

Income Taxes

As discussed in Note 13 to our Consolidated Financial Statements, as of April 30, 2007 we have approximately $44,115 of liabilities for income taxes associated with uncertain income tax positions. $42,730 of these liabilities are
included in other long-term liabilities in our Condensed Consolidated Balance Sheet as we generally do not anticipate the settlement of the liabilities will require payment of cash within the next twelve months. We are not able to reasonably
estimate the amount or timing of any cash payments required to settle these liabilities, and do not believe that the ultimate settlement of these obligations will materially affect our liquidity.

Indemnifications

Our license and
services agreements generally include a limited indemnification provision for claims from third-parties relating to our intellectual property. Such indemnification provisions are accounted for in accordance with SFAS No. 5, Accounting for
Contingencies. The indemnification is generally limited to the amount paid by the customer. At April 30, 2007, we are not aware of any material liabilities arising from these indemnifications.

Legal Proceedings

From time to time
we are involved in various disputes and litigation matters that arise from the ordinary course of business. These include disputes and lawsuits relating to intellectual property rights, licensing, contracts and employee relations matters.
Periodically, we review the status of various disputes and litigation matters and assess each potential exposure. If the potential loss from any dispute or legal matter is considered probable and the amount or the range of loss can be estimated, we
will accrue a liability for the estimated loss in accordance with SFAS No. 5, Accounting for Contingencies. Legal proceedings are subject to uncertainties and the outcomes are difficult to predict. Because of such uncertainties,
accruals are based only on the best information available at the time. As additional information becomes available, we reassess the potential liability related to pending claims and litigation matters and may revise estimates. We believe that the
outcome of current litigation, individually and in the aggregate, will not have a material effect on our results of operations.



|(16) | Related Party TransactionsCertain members of our Board of Directors also serve on the Board of Directors of certain of our customers. We recognized revenue from
these customers of $7,511, $7,774 and $2,326 during the three months ended April 30, 2007 and March 31, 2006 and the one month ended January 31, 2007, respectively. The related party revenue amounts represented 3.9%, 4.4% and 7.5% of
our total revenues for the three months ended each of April 30, 2007 and March 31, 2006 and the one month ended January 31, 2007, respectively. Management believes the transactions between these customers and us were carried out on an
arms length basis.
|---- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(17) | Segment ReportingSFAS No. 131, Disclosures about Segments of an Enterprise and Related Information (SFAS 131), requires disclosures of certain
information regarding operating segments, products and services, geographic areas of operation and major customers. To determine what information to report under SFAS 131, we reviewed the Chief Operating Decision Makers (CODM) method of
analyzing the operating segments to determine resource allocations and performance assessments. Our CODMs are the Chief Executive Officer and the President.
|---- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

We operate exclusively in the electronic design automation (EDA) industry. We market our products and services worldwide, primarily to large companies in the military/aerospace, communications, computer, consumer
electronics, semiconductor, networking, multimedia and transportation industries. We sell and license our products through our direct sales force in North America, Europe, Japan and the Pacific Rim and through distributors where third parties can
extend sales reach more effectively or efficiently. Our reportable segments are based on geographic area.

All intercompany revenues and
expenses are eliminated in computing revenues and operating income (loss). The corporate component of operating income (loss) represents research and development, corporate marketing and selling, corporate general and administration, special charges
and in-process research and development charges. Reportable segment information is as follows:



17



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##### Table of Contents

|                                      |  |                    |          |   |                                  |   |          |   |  |   |         |  
|------------------------------------- |  | ------------------ | -------- | - | -------------------------------- | - | -------- | - |  | - | ------- | -
|                                      |  | Three months ended |          |   | One month ended
January 31, 2007 |  
|                                      |  | April 30, 2007     |          |   | March 31, 2006                   |   |         
|Revenues                              |  |                    |          |   |                                  |   |          |   |  |   |         |  
|North America                         |  | $                  | 89,619   |   |                                  | $ | 63,688   |   |  | $ | 13,675  |  
|Europe                                |  |                    | 45,546   |   |                                  |   | 49,679   |   |  |   | 9,566   |  
|Japan                                 |  |                    | 29,592   |   |                                  |   | 38,981   |   |  |   | 4,625   |  
|Pacific Rim                           |  |                    | 25,706   |   |                                  |   | 23,974   |   |  |   | 3,016   |  
|                                      |  |                    |          |   |                                  |   |          |   |  |   |         |  
|Total                                 |  | $                  | 190,463  |   |                                  | $ | 176,322  |   |  | $ | 30,882  |  
|                                      |  |                    |          |   |                                  |   |          |   |  |   |         |  
|Operating income (loss)               |  |                    |          |   |                                  |   |          |   |  |   |         |  
|North America                         |  | $                  | 53,664   |   |                                  | $ | 32,447   |   |  | $ | 2,501   |  
|Europe                                |  |                    | 21,176   |   |                                  |   | 27,331   |   |  |   | 419     |  
|Japan                                 |  |                    | 20,917   |   |                                  |   | 28,687   |   |  |   | 1,332   |  
|Pacific Rim                           |  |                    | 19,613   |   |                                  |   | 18,462   |   |  |   | 681     |  
|Corporate                             |  |                    | (114,741 | ) |                                  |   | (107,900 | ) |  |   | (37,341 | )
|                                      |  |                    |          |   |                                  |   |          |   |  |   |         |  
|Total                                 |  | $                  | 629      |   |                                  | $ | (973     | ) |  | $ | (32,408 | )
|                                      |  |                    |          |   |                                  |   |          |   |  |   |         |  
|Net income (loss) before income taxes |  |                    |          |   |                                  |   |          |   |  |   |         |  
|North America                         |  | $                  | 52,177   |   |                                  | $ | 22,536   |   |  | $ | 2,269   |  
|Europe                                |  |                    | 22,360   |   |                                  |   | 26,643   |   |  |   | 1,423   |  
|Japan                                 |  |                    | 21,471   |   |                                  |   | 29,056   |   |  |   | 1,501   |  
|Pacific Rim                           |  |                    | 19,785   |   |                                  |   | 18,617   |   |  |   | 761     |  
|Corporate                             |  |                    | (114,741 | ) |                                  |   | (107,900 | ) |  |   | (37,341 | )
|                                      |  |                    |          |   |                                  |   |          |   |  |   |         |  
|Total                                 |  | $                  | 1,052    |   |                                  | $ | (11,048  | ) |  | $ | (31,387 | )
|                                      |  |                    |          |   |                                  |   |          |   |  |   |         |  

We segregate revenue into three categories of similar products and services. These categories
include integrated circuit design, systems design and professional services. The integrated circuit design and systems design categories include both product and support revenues. Revenue information is as follows:



|                          |  |                    |         |                                  |   |         |  |   |       
|------------------------- |  | ------------------ | ------- | -------------------------------- | - | ------- |  | - | ------
|                          |  | Three months ended |         | One month ended
January 31, 2007
|                          |  | April 30, 2007     |         | March 31, 2006                   |  
|Revenues                  |  |                    |         |                                  |   |         |  |   |       
|Integrated Circuit Design |  | $                  | 135,060 |                                  | $ | 123,959 |  | $ | 22,129
|Systems Design            |  |                    | 47,529  |                                  |   | 45,255  |  |   | 8,076 
|Professional Services     |  |                    | 7,874   |                                  |   | 7,108   |  |   | 677   
|                          |  |                    |         |                                  |   |         |  |   |       
|Total                     |  | $                  | 190,463 |                                  | $ | 176,322 |  | $ | 30,882
|                          |  |                    |         |                                  |   |         |  |   |       



|(18) | Recent Accounting PronouncementsIn February 2007, the FASB issued SFAS No. 159, The Fair Value Option for Financial Assets and Financial
Liabilities (SFAS 159). SFAS 159 permits companies to choose to measure certain financial instruments and other items at fair value. The standard requires that unrealized gains and losses are reported in earnings for items measured using the
fair value option. SFAS 159 is effective for us as of the beginning of fiscal 2009. We do not believe the adoption of SFAS 159 will have a material effect on our consolidated financial position, results of operations or cash flows.
|---- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

In September 2006, the FASB issued SFAS No. 157, Fair Value Measurements (SFAS 157). SFAS 157 defines fair
value, establishes a framework for measuring fair value, and expands disclosures about fair value measurements. SFAS 157 does not require any new fair value measurements but rather eliminates inconsistencies in previously issued guidance. This
statement is effective for financial statements issued for fiscal years beginning after November 15, 2007 and interim periods within those fiscal years. We do not anticipate that the adoption of SFAS 157 will have a material impact upon our
consolidated financial statements.



|(19) | Subsequent EventOn June 8, 2007, we acquired 100% of the shares of Sierra Design Automation, Inc., a privately held electronic design automation company
based in Santa Clara, California that specializes in integrated circuit implementation solutions. We will offer their products on a stand-alone basis. The total purchase price including acquisition costs is $90 million, of which approximately half
will be paid in common stock and half will be paid in cash.
|---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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##### Table of Contents

|Item 2. | Managements Discussion and Analysis of Financial Condition and Results of Operations
|------- | -------------------------------------------------------------------------------------

(All numerical references in thousands, except for percentages and per share data)

This Form 10-Q contains
forward-looking statements that involve risks and uncertainties. Actual results may differ materially from the forward-looking statements. Factors that could cause or contribute to such differences include, but are not limited to, those set forth
under Part II, Item 1A Risk Factors.

Overview

THE COMPANY

We are a supplier of electronic design automation (EDA) systems  advanced computer
software, emulation hardware systems and intellectual property designs and databases used to automate the design, analysis and testing of electronic hardware and embedded systems software used in electronic systems and components. We market our
products and services worldwide, primarily to large companies in the communications, computer, consumer electronics, semiconductor, networking, multimedia, military/aerospace, and transportation industries. Through the diversification of our
customer base among these various customer markets, we attempt to reduce our exposure to fluctuations within each market. We sell and license our products through our direct sales force and a channel of distributors and sales representatives. In
addition to our corporate offices in Wilsonville, Oregon, we have sales, support, software development and professional service offices worldwide.

We
changed our fiscal year end from December 31 to January 31 beginning with the fiscal year ending January 31, 2008, which we refer to as fiscal 2008. This change took effect following the completion of the year ended December 31,
2006, and as a result we have included information covering the transition period from January 1, 2007 to January 31, 2007 in this Form 10-Q pursuant to Rule 13a-10 of the Securities and Exchange Act of 1934, as amended. We did not
experience a significant amount of business activity or product shipment in January 2007 and have reported a loss for that period. The low level of business activity and product shipment resulted in part from the historical pattern of low levels of
business activity in January, and in part because we did not implement significant sales incentive compensation programs for that one-month period.

BUSINESS ENVIRONMENT

Business at the end of 2006 continued to be strong and broad-based with system and software bookings up
compared to the prior year. That strength continued during the first quarter of fiscal 2008, with bookings up 15% compared to the first quarter of 2006, led by growth in Integrated System Design, Scalable Verification and our automotive products.
Bookings are the value of executed orders during a period for which revenue has been or will be recognized within six months for products and within twelve months for professional services and training. During the three months ended April 30,
2007, we experienced an 11% increase in system and software revenues as compared to the three months ended March 31, 2006. With this growth in system and software revenues, we have experienced seven consecutive quarters of year over year
growth. The ten largest transactions for the three months ended April 30, 2007 accounted for approximately 46% of total system and software bookings as compared to 48% in the three months ended March 31, 2006. The number of new customers
during the three months ended April 30, 2007 was up 13% from the levels experienced during the three months ended March 31, 2006.

Our bookings
growth in the quarter was broad-based including targeted business areas rather than from significant term contract renewal activity. Emulation experienced strong results following the formal announcement of Veloce, and an increase in bookings for
automotive networking products resulted from continued efforts to meet customer requirements in non-traditional EDA markets. Integrated System Design and New and Emerging also experienced growth compared to the first quarter of the prior year. The
Calibre family of products was relatively flat compared to the first quarter of the prior year. This is notable as the prior year period experienced a nearly 250% increase in system and software bookings over the comparable period of 2005.

Management believes fiscal 2008 looks positive for us and for the EDA industry in general. Last year the EDA industry experienced significant growth and
industry-wide first quarter results suggest that this trend will continue. EDA forecasts of a strong year in calendar 2007 are based on the current trends as well as our belief that typical cycles of growth within EDA are four to five years.

We will continue our strategy of developing best in class point tools with number one market share potential, rather than being a broad-line supplier with
undifferentiated product offerings. This strategy allows us to focus investment in areas where customer needs are greatest and we have the opportunity to build significant market share.



19



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##### Table of Contents

License Model Mix

License model trends can have a material impact on various aspects of our business. See Summary of Significant Accounting Policies in Note 3 of the Notes to Unaudited Consolidated Financial Statements for a description of the
types of product licenses we sell. As the mix among perpetual licenses, fixed term licenses (term) with upfront revenue recognition and term licenses with ratable revenue recognition (which includes due and payable revenue recognition) shifts,
revenues, earnings, cash flow and days sales outstanding (DSO) are either positively or negatively affected. The year ended December 31, 2006 marked the sixth consecutive year in which, as a percentage of product revenue, term revenue increased
while perpetual revenue decreased. This trend continued during the three months ended April 30, 2007 and we believe this trend will continue for fiscal 2008. Our customers continue to move toward the term license model, which generally provides
the customer with greater flexibility for product usage, including the option to share products between multiple product development locations and reconfigure which products they use at regular intervals from a fixed product list. Many of our
customers have converted their existing installed base from perpetual to term licenses.

Under this ongoing shift from perpetual licenses to term licenses
with upfront revenue recognition, which our management views as a positive trend, we expect no significant impact to earnings, but a negative impact on cash flow and DSO. As customers move away from perpetual licenses and into term licenses, the
renewability and repeatability of our business is increased. This provides opportunity for increased distribution of newer products earlier in their lifecycles.

Product Developments

During the first quarter of fiscal 2008, we continued to execute our strategy of focusing on solving new
technical problem areas facing customers, as well as building upon our well-established product families. Our management believes that customers, faced with leading-edge design challenges in creating new products, generally choose the best EDA
products in each category to build their design environment. Through both internal development and strategic acquisitions, we have focused on areas where we believe we can build a leading market position or extend an existing leading market
position.

In February 2007, we announced the release of Board Station® XE, the next-generation version of our Board Station design flow for large enterprise customers. In March, we announced
a technology launch of subsystem intellectual property (IP), beginning with a USB subsystem solution, intended to enable faster design creation and improve overall product quality, with particular benefit for the consumer electronics market. In
April 2007, we formally launched the Veloce®
product family, comprising three new next-generation hardware-assisted verification platforms. The Veloce Solo, Trio and Quattro products each deliver emulation capability for concurrent hardware-software validation and embedded system verification
for key vertical markets such as multimedia/graphics, computing, networking and wireless designs. Management believes that the development and commercialization of EDA software tools is usually a multi-year process with limited customer adoption in
the first years of tool availability. Once tools are adopted, however, their life spans tend to be long. Management believes that our relatively young and diverse product lines are positioned for growth over the long-term.

Q1 Fiscal 2008 Financial Performance



| |  |  | Total revenues were $190,463 for the three months ended April 30, 2007, an 8% increase over the three months ended March 31, 2006. The increase resulted
from strength in IC Design to Silicon and New and Emerging Markets. Revenue strength in IC Design to Silicon was led by the Calibre product family and strength in New and Emerging Markets was concentrated in our Automotive groups cabling and
networking product lines.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | System and software revenues were $113,858 for the three months ended April 30, 2007, an 11% increase over the three months ended March 31, 2006. Product
revenue split by license model for the first quarter of fiscal 2008 was 60% term with upfront revenue recognition, 25% perpetual and 15% term with ratable revenue recognition (which includes due and payable revenue recognition), compared to first
quarter 2006 product revenue splits of 55% term with upfront revenue recognition, 28% perpetual and 17% term with ratable revenue recognition.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Service and support revenues were $76,605 for the three months ended April 30, 2007, a 4% increase over the three months ended March 31, 2006.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | By geography, revenues in the Americas increased 41% for the three months ended April 30, 2007, as compared to the three months ended March 31, 2006.
Revenues decreased in Europe 8% for the three months ended April 30, 2007 as compared to the three months ended March 31, 2006. Revenues decreased in Japan 24% for the three months ended April 30, 2007 as compared to the three months
ended March 31, 2006. Revenues increased in the Pacific Rim 7% for the three months ended April 30, 2007 as compared to the three months ended March 31, 2006. The Americas contributed the largest share of revenues at 47% for the three
months ended April 30, 2007, an increase from 36% for the three months ended March 31, 2006.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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##### Table of Contents

| |  |  | Net income was $290 for the three months ended April 30, 2007 compared to a net loss of $5,860 in the three months ended March 31, 2006.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Trade accounts receivable, net increased to $278,403 at April 30, 2007, up 6% from $263,126 at December 31, 2006. Average days sales outstanding increased
to 132 days as of April 30, 2007 from 96 days at December 31, 2006.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Cash used in operating activities was $11,065 for the three months ended April 30, 2007 compared to cash provided by operating activities of $16,456 for the
three months ended March 31, 2006. At April 30, 2007, cash, cash equivalents and short-term investments were $122,876, down 5% from $129,857 at December 31, 2006.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Critical Accounting Policies

Our discussion and analysis of our
financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles. The preparation of these financial statements requires us
to make estimates and judgments that affect the reported amounts of assets, liabilities and contingencies as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. We evaluate our
estimates on an on-going basis. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying
values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

Effective February 1, 2007, we adopted FASB Interpretation No. 48, Accounting for Uncertainty in Income Taxes  an interpretation of FASB Statement No. 109, Accounting for Income Taxes
(FIN 48). Under this recently released interpretation, the threshold for recognition is determined by whether it is more likely than not that a tax position will be sustained upon examination, including resolution of any related appeals or
litigation processes, based on the technical merits of the position. A tax position that meets the recognition threshold is measured to determine the amount of benefit to be recorded in the financial statements. The tax position is measured at the
largest amount of benefit that is greater than 50 percent likely of being realized when it is ultimately settled. FIN 48 also provides guidance on derecognition, classification, interest and penalties, accounting in interim periods, disclosure and
transition with respect to uncertain tax positions. We reflect interest and penalties related to income tax liabilities as income tax expense.

We believe
that the accounting for revenue recognition, valuation of trade accounts receivable, valuation of deferred tax assets, income tax reserves, goodwill, intangible assets and long-lived assets, restructuring charges and accounting for stock-based
compensation are the critical accounting estimates and judgments used in the preparation of our consolidated financial statements. For a discussion of our critical accounting policies, see Item 7. Managements Discussion and Analysis of
Financial Condition and Results of Operations  Critical Accounting Polices in our Annual Report on Form 10-K for the year ended December 31, 2006.

RESULTS OF OPERATIONS

Revenues and Gross Margins



|                                  |  |                    |         |   |        |    |   |                |   |         |  
|--------------------------------- |  | ------------------ | ------- | - | ------ | -- | - | -------------- | - | ------- | -
|                                  |  | Three months ended |        
|                                  |  | April 30, 2007     |         |   | Change |    |   | March 31, 2006 |  
|System and software revenues      |  | $                  | 113,858 |   |        | 11 | % |                | $ | 102,940 |  
|System and software gross margins |  |                    | 106,328 |   |        | 11 | % |                |   | 95,390  |  
|Gross margin percent              |  |                    | 93      | % |        |    |   |                |   | 93      | %
|Service and support revenues      |  |                    | 76,605  |   |        | 4  | % |                |   | 73,382  |  
|Service and support gross margins |  |                    | 54,422  |   |        | 2  | % |                |   | 53,132  |  
|Gross margin percent              |  |                    | 71      | % |        |    |   |                |   | 72      | %
|Total revenues                    |  |                    | 190,463 |   |        | 8  | % |                |   | 176,322 |  
|Total gross margins               |  |                    | 160,750 |   |        | 8  | % |                |   | 148,522 |  
|Gross margin percent              |  |                    | 84      | % |        |    |   |                |   | 84      | %



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##### Table of Contents

System and Software

System and software revenues are derived from the sale of licenses of software products and emulation hardware systems. System and software revenues were higher in the three months ended April 30, 2007 as compared to the three months
ended March 31, 2006 primarily due to increases in our Design to Silicon area lead by our Calibre product line. These gains were minimally affected by foreign currency fluctuations during the three months ended April 30, 2007, as more
fully described under Geographic Revenues Information below.

System and software gross margin percentage was flat for the three months ended
April 30, 2007 as compared to the three months ended March 31, 2006 as cost of goods sold rose in line with the revenues. The write-down of emulation hardware systems inventory was $247 in the three months ended April 30, 2007
compared to $858 in the three months ended March 31, 2006. These reserve adjustments reduced inventory to the amount that was expected to ship within six months on the assumption that any excess would be obsolete. Also, certain previously
reserved-for inventory of $52 was sold during the three months ended April 31, 2007, compared to $695 for the three months ended March 31, 2006.

Amortization of purchased technology to system and software cost of revenues was $3,042 for the three months ended April 30, 2007, compared to $3,235 for the three months ended March 31, 2006. Purchased technology costs are
amortized over two to five years to system and software cost of revenues. The decrease in amortization in the three months ended April 30, 2007 was primarily attributable to a full quarter of amortization of certain intangible assets acquired
in acquisitions completed through December 31, 2006, offset by complete amortization in 2006 of certain intangible assets acquired in previous years.

Service and Support

Service and support revenues consist of revenues from support contracts and professional services, which include
consulting services, training services and other services. The increase in service and support revenues for the three months ended April 30, 2007 compared to the three months ended March 31, 2006 was primarily attributed to growth in the
installed base of customers under support contracts, specifically in our Scalable Verification area, lead by our 0-In and ModelSim product lines, and Design to Silicon area, lead by our Calibre product line. These gains were minimally affected by
foreign currency fluctuations during the three months ended April 30, 2007, as more fully described under Geographic Revenues Information below.

The service and support gross margin percentage declined slightly for the three months ended April 30, 2007 as compared to the three months ended March 31, 2006. This is primarily due to declining revenues and consistent costs in
emulation hardware systems support. Costs associated with emulation hardware support have remained consistent in preparation of providing support for our newly released emulation hardware product.

Geographic Revenues Information

Revenue by Geography



|              |  |                    |         |        |     |    |                |   |        
|------------- |  | ------------------ | ------- | ------ | --- | -- | -------------- | - | -------
|              |  | Three months ended
|              |  | April 30, 2007     |         | Change |     |    | March 31, 2006
|North America |  | $                  | 89,619  |        | 41  | %  |                | $ | 63,688 
|Europe        |  |                    | 45,546  |        | (8  | )% |                |   | 49,679 
|Japan         |  |                    | 29,592  |        | (24 | )% |                |   | 38,981 
|Pacific Rim   |  |                    | 25,706  |        | 7   | %  |                |   | 23,974 
|              |  |                    |         |        |     |    |                |   |        
|Total         |  | $                  | 190,463 |        | 8   | %  |                | $ | 176,322
|              |  |                    |         |        |     |    |                |   |        

Revenues increased in North America in the three months ended April 30, 2007 as compared to the three months
ended March 31, 2006, primarily as a result of increased software product revenues.

Revenues outside of North America represented 53% and 64% of
total revenues in the three months ended April 30, 2007 and March 31, 2006. Most large European revenue contracts are denominated and paid in the United States dollar. The effects of exchange rate differences from the European currencies
to the United States dollar positively impacted European revenues by approximately 2% for the three months ended April 30, 2007. Exclusive of currency effects, lower European revenues in the three months ended April 30, 2007 were primarily
the result of decreased software product revenues, partially offset by an increase in support revenues.



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##### Table of Contents

The effects of exchange rate differences from the Japanese yen to the United States dollar negatively impacted Japanese
revenues by approximately 2% for the three months ended April 30, 2007. Exclusive of currency effects, lower Japanese revenues in the three months ended April 30, 2007 as compared to the three months ended March 31, 2006, were
primarily the result of decreased software product revenues.

Revenues increased in the Pacific Rim in the three months ended April 30, 2007 compared
to the three months ended March 31, 2006, primarily as a result of higher software product revenues and support revenues.

We generate approximately
half of our revenues outside of North America and expect this to continue in the future. Revenue results will continue to be impacted by the effects of future foreign currency fluctuations.

Operating Expenses



|                                    |  |                    |         |        |      |    |                |   |        
|----------------------------------- |  | ------------------ | ------- | ------ | ---- | -- | -------------- | - | -------
|                                    |  | Three months ended
|                                    |  | April 30, 2007     |         | Change |      |    | March 31, 2006
|Research and development            |  | $                  | 59,190  |        | 7    | %  |                | $ | 55,063 
|Marketing and selling               |  |                    | 72,560  |        | 8    | %  |                |   | 66,971 
|General and administration          |  |                    | 22,940  |        | 10   | %  |                |   | 20,919 
|Amortization of intangible assets   |  |                    | 1,378   |        | 22   | %  |                |   | 1,126  
|Special charges                     |  |                    | 4,053   |        | (23  | )% |                |   | 5,236  
|In-process research and development |  |                    |        |        | (100 | )% |                |   | 180    
|                                    |  |                    |         |        |      |    |                |   |        
|Total operating expenses            |  | $                  | 160,121 |        | 7    | %  |                | $ | 149,495
|                                    |  |                    |         |        |      |    |                |   |        

Research and Development

For the three months ended April 30, 2007 as compared to the three months ended March 31, 2006, the increase in research and development costs was primarily due to (i) the year-over year effect of
annual salary increases, (ii) a weakening of the U.S. dollar, (iii) higher variable compensation as a result of improved financial results, (iv) increased benefit costs associated with higher employee compensation and
(v) increased headcount in Design to Silicon and Integrated Systems. A weakening U.S. dollar accounted for approximately 27% of the expense increase year over year primarily related to European currencies.

Marketing and Selling

For the three months ended
April 30, 2007 as compared to the three months ended March 31, 2006, the increase in marketing and selling costs was primarily attributable to (i) the year over year effect of annual salary increases, (ii) a weakening of he U.S.
dollar (iii) increased commissions as a result of improved financial results, (iv) increased training and relocation costs incurred for personnel and (v) increased benefit costs associated with higher employee compensation. A
weakening U.S. dollar accounted for approximately 40% of the expense increase year over year.

General and Administration

For the three months ended April 30, 2007 as compared to the three months ended March 31, 2006, the increase in general and administration costs was the result
of (i) increased consulting and professional service costs, (ii) the year over year effect of annual salary increases, and (iii) a weakening of the U.S. dollar. A weakening U.S. dollar accounted for approximately 20% of the expense
increase year over year.

Amortization of Intangible Assets

For the three months ended April 30, 2007 as compared to the three months ended March 31, 2006, the increase in amortization of intangible asset costs was primarily due to a full quarter of amortization of
certain intangible assets acquired through acquisitions completed through December 31, 2006, offset by complete amortization in 2006 of certain intangible assets acquired in previous years.



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Special Charges



|                             |  |                                   |       |   |                                  |   |                                 |  |   |    
|---------------------------- |  | --------------------------------- | ----- | - | -------------------------------- | - | ------------------------------- |  | - | ---
|                             |  | Three months ended April 30, 2007 |       |   | Three months endedMarch 31, 2006 |   | One month endedJanuary 31, 2007
|Excess leased facility costs |  | $                                 | (16   | ) |                                  | $ | 863                             |  | $ |   
|Employee severance           |  |                                   | 3,969 |   |                                  |   | 3,592                           |  |   | 113
|Other                        |  |                                   | 100   |   |                                  |   | 781                             |  |   | 6  
|                             |  |                                   |       |   |                                  |   |                                 |  |   |    
|Total special charges        |  | $                                 | 4,053 |   |                                  | $ | 5,236                           |  | $ | 119
|                             |  |                                   |       |   |                                  |   |                                 |  |   |    

During the three months ended April 30, 2007, we recorded special charges of $4,053. These charges primarily
consisted of costs incurred for employee terminations and are due to our reduction of personnel resources driven by modifications of business strategy or business emphasis.

The reduction of excess leased facility costs of $16 during the three months ended April 30, 2007 resulted from the termination of an abandoned facility lease in a lease buyout. The cost of the lease buyout was
less than the remaining balance of the accrual, resulting in an adjustment to special charges.

We rebalanced our workforce by 101 employees during the
three months ended April 30, 2007. The reduction impacted several employee groups. Employee severance costs of $3,969 included severance benefits, notice pay and outplacement services. The total rebalance charge represents the aggregate of
numerous unrelated rebalance plans, none of which was individually material to our financial position or results of operations. Termination benefits were communicated to the affected employees prior to the end of the quarter in which the charge was
recorded. Approximately 57% of these costs were paid during the quarter and we expect to pay the remainder during the fiscal year ending January 31, 2008. There have been no significant modifications to the amount of these charges.

Other special charges for the three months ended April 30, 2007 included fees of $100 for the termination of a service agreement related to a subsidiary that was
legally merged with one of our other subsidiaries located in the same country.

During the three months ended March 31, 2006, we recorded special
charges of $5,236. These charges primarily consisted of costs incurred for employee terminations and are due to our reduction of personnel resources driven by modifications of business strategy or business emphasis.

Excess leased facility costs of $863 during the three months ended March 31, 2006 primarily includes $909 of non-cancelable lease payments, net of sublease income,
related to the abandonment of a facility in Europe. Non-cancelable lease payments for the excess leased facility space will be paid over eleven years. Excess leased facility costs were offset by $46 of net costs related to the restoration of two
facilities in Europe.

We rebalanced our workforce by 67 employees during the three months ended March 31, 2006. The reduction impacted several
employee groups. Employee severance costs of $3,592 included severance benefits, notice pay and outplacement services. The total rebalance charge represents the aggregate of numerous unrelated rebalance plans, none of which was individually material
to our financial position or results of operations. Termination benefits were communicated to the affected employees prior to the end of the quarter in which the charge was recorded. The majority of these costs were paid during the year ended
December 31, 2006. There have been no significant modifications to the amount of these charges.

Other special charges for the three months ended
March 31, 2006 of $781 included a loss of $628 for the disposal of property and equipment related to the discontinuation of an intellectual property line, $77 for terminated acquisitions that were no longer viable and $76 for other costs.

Included throughout the above special charges for the three months ended March 31, 2006 are costs of $1,613 incurred as a result of actions related
to the discontinuation of one of our intellectual property product lines. These costs included $909 in non-cancelable lease payments, net of sublease income, related to the abandonment of excess leased facility space in Europe. Other costs incurred
in relation to the product-line discontinuation included a loss of $628 on the abandonment or disposal of property and equipment primarily related to leasehold improvements and $76 for other costs.

During the month ended January 31, 2007, we recorded special charges of $119. These charges primarily consisted of costs incurred for employee terminations and are
due to our reduction of personnel resources driven by modifications of business strategy or business emphasis.



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We rebalanced our workforce by three employees during the month ended January 31, 2007. The reduction impacted
several employee groups. Employee severance costs of $113 included severance benefits, notice pay and outplacement services. The total rebalance charge represents the aggregate of numerous unrelated rebalance plans, none of which was individually
material to our financial position or results of operations. Termination benefits were communicated to the affected employees prior to the end of the month in which the charge was recorded. The majority of these costs were paid during the quarter
ended April 30, 2007. There have been no significant modifications to the amount of these charges.

Other special charges for the month ended
January 31, 2007 included $6 for the write off of costs related to terminated acquisitions that were no longer viable.

In-process Research and
Development



|                                    |  |                    |   |        |      |    |                |   |    
|----------------------------------- |  | ------------------ | - | ------ | ---- | -- | -------------- | - | ---
|                                    |  | Three months ended
|                                    |  | April 30, 2007     |   | Change |      |    | March 31, 2006
|In-process research and development |  | $                  |  |        | (100 | )% |                | $ | 180

No in-process research and development (R&D) charges were incurred in the three months ended April 30,
2007. We incurred R&D charges related to one acquisition during the three months ended March 31, 2006.

Other Income, Net



|                                     |  |                    |       |   |        |      |    |                |   |        |  
|------------------------------------ |  | ------------------ | ----- | - | ------ | ---- | -- | -------------- | - | ------ | -
|                                     |  | Three months ended |      
|                                     |  | April 30, 2007     |       |   | Change |      |    | March 31, 2006 |  
|Interest income                      |  | $                  | 7,034 |   |        | 35   | %  |                | $ | 5,209  |  
|Loss on sale of accounts receivable  |  |                    | (846  | ) |        | 41   | %  |                |   | (1,438 | )
|Gain (loss) on hedge ineffectiveness |  |                    | 2     |   |        | 100  | %  |                |   | (1,046 | )
|Foreign exchange loss                |  |                    | (413  | ) |        | 7    | %  |                |   | (446   | )
|Other, net                           |  |                    | (236  | ) |        | (178 | )% |                |   | (85    | )
|                                     |  |                    |       |   |        |      |    |                |   |        |  
|Other income, net                    |  | $                  | 5,541 |   |        | 153  | %  |                | $ | 2,194  |  
|                                     |  |                    |       |   |        |      |    |                |   |        |  

Interest income includes amortization of the interest component of our term license installment agreements of
$5,103 and $3,312 for the three months ended April 30, 2007 and March 31, 2006, respectively. The increase in interest income for term license installment agreements was primarily attributable to (i) the increase in average interest
rates applied in determining the interest component for the outstanding term agreements during the applicable periods and (ii) the increase in the dollar value of term deals made in the preceding and current period for the three months ended
April 30, 2007 as compared to the preceding and current period for the three months ended March 31, 2006. In addition, we recorded income for the time value of foreign currency contracts of $556 and $576 for the three months ended
April 30, 2007 and March 31, 2006, respectively. Interest income also includes interest earned on our cash, cash equivalents and short-term investments of $1,375 and $1,321 for the three months ended April 30, 2007 and March 31,
2006, respectively.

The decrease in the loss on sale of accounts receivable is the result of a decrease in the sale of qualifying accounts receivable
balances to certain financing institutions on a non-recourse basis. During the three months ended April 30, 2007 and March 31, 2006, we sold trade receivables in the amounts of $5,822 and $7,818, respectively, and term receivables in the
amounts of $7,319 and $9,265, respectively.

During the three months ended April 30, 2007, we recognized a gain of $2 resulting from the hedge
ineffectiveness of derivative instruments that met the criteria for hedge accounting treatment under the requirements of Statement of Financial Accounting Standards (SFAS) 133, Accounting for Derivative Instruments and Hedging Activities
(SFAS 133). For the three months ended March 31, 2006, we recognized a loss of $1,046 for derivative instruments that did not meet the criteria for hedge accounting treatment under the requirements of SFAS 133.

Other income, net was impacted by a foreign currency loss of $413 and $446 in the three months ended April 30, 2007 and March 31, 2006, respectively, due to
fluctuations in currency rates.

Interest Expense

|                 |  |                    |       |        |     |    |                |   |       
|---------------- |  | ------------------ | ----- | ------ | --- | -- | -------------- | - | ------
|                 |  | Three months ended
|                 |  | April 30, 2007     |       | Change |     |    | March 31, 2006
|Interest expense |  | $                  | 5,118 |        | (58 | )% |                | $ | 12,269

The decrease in interest expense is due largely to the net effect of financing transactions, which occurred in the
three months ended March 31, 2006. These transactions included the issuance of our 6.25% Convertible Subordinated Debentures due



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2026 (6.25% Debentures), the retirement of our 6 7/8% Convertible Subordinated Notes due 2007 (Notes), and the retirement of portions of our Floating Rate Convertible Subordinated Debentures due 2023 (Floating Rate Debentures) in the three months ended
March 31, 2006 and subsequent periods thereafter, as more fully described in Liquidity and Capital Resources below. Interest expense for the three months ended April 30, 2007 included (i) $102 for the premium on the
Floating Rate Debentures, (ii) $62 for the write-off of unamortized debt issuance costs on the Floating Rate Debentures and (iii) amortization and interest expense on the 6.25% Debentures and Floating Rate Debentures of $4,247. Relating to
the above financing transactions, interest expense for the three months ended March 31, 2006 included (i) $4,716 for the premium on the Notes partially offset by repurchase discounts of $999 on the Floating Rate Debentures,
(ii) $2,154 for the write-off of unamortized debt issuance costs related to the Notes and Floating Rate Debentures and (iii) amortization and interest expense on the 6.25% Debentures, the Notes and the Floating Rate Debentures of $5,551.
Additionally, we have interest expenses relating to the time value of foreign currency contracts of $452 and $680 for the three months ended April 30, 2007 and March 31, 2006, respectively.

Provision for Income Taxes



|                             |  |                    |     |        |     |   |                |   |        |  
|---------------------------- |  | ------------------ | --- | ------ | --- | - | -------------- | - | ------ | -
|                             |  | Three months ended |    
|                             |  | April 30, 2007     |     | Change |     |   | March 31, 2006 |  
|Income tax expense (benefit) |  | $                  | 762 |        | 115 | % |                | $ | (5,188 | )

We recorded an expense from income taxes of $762 for the three months ended April 30, 2007, as compared to
the benefit for income taxes of $5,188 for the three months ended March 31, 2006. Generally, the provision for income taxes is the result of the mix of profits (losses) we and our subsidiaries earn in tax jurisdictions with a broad range of
income tax rates. On a quarterly basis, we evaluate our provision for income taxes based on our projected results of operations for the full year and record an adjustment in the current quarter. For the three months ended April 30, 2007, our
effective tax rate was 73%, after considering discrete items of $405. Without discrete items, our effective tax rate for the quarter was 34%. The effective tax rate for the remainder of fiscal 2008 could change significantly if actual results are
different than current outlook-based projections. The projected provision for income taxes for fiscal 2008 at a 35% effective tax rate, inclusive of discrete items, is consistent with the federal statutory rate, noting it considers (i) profits
in the United States being partially offset by historic losses and credits for which no previous benefits were recognized, (ii) benefit of lower tax rates on earnings of foreign subsidiaries, offset in part by (iii) an increase in tax
reserves, (iv) withholding taxes primarily in certain foreign jurisdictions, and (v) nondeductible incentive stock option and employee stock purchase plan compensation expense.

We have not provided for United States income taxes on the undistributed earnings of foreign subsidiaries because they are considered permanently invested outside of the United States. If repatriated, some of these
earnings would generate foreign tax credits, which may reduce the federal tax liability associated with any future foreign dividend.

Under SFAS
No. 109, Accounting for Income Taxes (SFAS 109), deferred tax assets and liabilities are determined based on differences between financial reporting and tax basis of assets and liabilities and are measured using the enacted tax
rates and laws that will be in effect when the differences are expected to reverse. SFAS 109 provides for the recognition of deferred tax assets without a valuation allowance if realization of such assets is more likely than not.

Since 2004, we have determined it is uncertain whether our United States entities will generate sufficient taxable income and foreign source income to utilize foreign
tax credit carryforwards, research and experimentation credit carryforwards and net operating loss carryforwards before expiration. Accordingly, we recorded valuation allowances in 2004, 2005 and 2006 against the portion of those deferred tax assets
for which realization is uncertain. We expect to continue applying valuation allowances in fiscal 2008, to the extent net deferred tax assets are generated, consistent with the prior three years. A portion of the valuation allowances for deferred
tax assets relates to certain of the tax attributes acquired from IKOS Systems, Inc. in 2002 and 0-In Design Automation, Inc. in 2004, for which subsequently recognized tax benefits will be applied directly to reduce goodwill. The remainder of the
valuation allowance was based on the historical earnings patterns within individual taxing jurisdictions which make it uncertain that we will have sufficient income in the appropriate jurisdictions to realize the full value of the assets. We will
continue to evaluate the realizability of the deferred tax assets on a quarterly basis.

We are subject to income taxes in the United States and in
numerous foreign jurisdictions and in the ordinary course of business, there are many transactions and calculations where the ultimate tax determination is uncertain. The statute of limitations for adjustments to our historic tax obligations will
vary from jurisdiction to jurisdiction. In some cases it may be extended or be unlimited. Further, attribute carryforwards may be subject to adjustment after the expiration of the statute of limitations of the year such attribute was originated. Our
larger jurisdictions generally provide for a statute of limitation from three to five years, noting the United States remains open for fiscal years 2002 and forward. We are currently under examination in various jurisdictions, including the United
States, Germany, and Japan. The examinations are in different



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stages and timing of their resolution is difficult to predict. The examination in the United States by the Internal Revenue Service (IRS) pertains to our
2002, 2003, 2004 and 2005 tax years. In March 2007, the IRS issued a Revenue Agents Report in which adjustments were asserted totaling $146,600 of additional taxable income for 2002 through 2004. The adjustments primarily concern transfer
pricing arrangements related to intellectual property rights acquired in acquisitions which were transferred to a foreign subsidiary. We disagree with the IRSs adjustments and continue to vigorously defend our position.

We have reserves for taxes to address potential exposures involving tax positions that are being challenged or that could be challenged by taxing authorities even though
we believe that the positions we have taken are appropriate. We believe our tax reserves are adequate to cover potential liabilities. The tax reserves are reviewed as circumstances warrant and adjusted as events occur that affect our potential
liability for additional taxes. In connection with our adoption of FIN 48, we reclassified $42,730 of tax reserves from income taxes payable to other long-term liabilities. It is often difficult to predict the final outcome or timing of resolution
of any particular tax matter. Within the next twelve months, it is reasonably possible that events, such as the settlement of audits or the expiration of certain statute of limitations, may occur that would affect our reserves and effective tax
rate. Further, various events could cause us to re-evaluate our reserves. Accrued income tax-related interest and penalties for the quarter were $441.

Effects of Foreign Currency Fluctuations

More than half of our revenues and approximately one-third of our expenses were generated
outside of the United States for the three months ended April 2007. For fiscal 2008, approximately one-fourth of European and approximately ninety percent of Japanese revenues were subject to exchange rate fluctuations as they were booked in local
currencies. For fiscal 2006, approximately one-fourth of European and all of Japanese revenues were subject to exchange rate fluctuations as they were booked in local currencies. Most large European revenue contracts are denominated and paid to us
in the United States dollar while our European expenses, including substantial research and development operations, are paid in local currencies causing a short position in the Euro and the British pound. In addition, we experience greater inflows
than outflows of Japanese yen as almost all Japanese-based customers contract and pay us in local currency. While these exposures are aggregated on a consolidated basis to take advantage of natural offsets, substantial exposure remains. For
exposures that are not offset, we enter into short-term foreign currency forward and option contracts to partially offset these anticipated exposures. The option contracts are generally entered into at contract strike rates that are different than
current market rates. As a result, any unfavorable currency movements below the strike rates will not be offset by the foreign currency option contract and could negatively affect operating results. These contracts address anticipated future cash
flows for periods up to one year and do not hedge 100% of the potential exposures related to these currencies. As a result, currency fluctuations could have a substantial effect on our overall results of operations.

Foreign currency translation adjustment, a component of accumulated other comprehensive income reported in the Stockholders Equity section of the Consolidated
Balance Sheets, increased to $32,255 at April 30, 2007 from $28,817 at December 31, 2006. This reflected an increase in the value of net assets denominated in foreign currencies as a result of the weakening of the United States dollar
since December 31, 2006.

LIQUIDITY AND CAPITAL RESOURCES



|                                                                      |  |                     |         |   |                        |   |         |  
|--------------------------------------------------------------------- |  | ------------------- | ------- | - | ---------------------- | - | ------- | -
|                                                                      |  | As ofApril 30, 2007 |         |   | As ofDecember 31, 2006 |  
|Current assets                                                        |  | $                   | 443,712 |   |                        | $ | 435,211 |  
|Cash, cash equivalents and short-term investments                     |  | $                   | 122,876 |   |                        | $ | 129,857 |  
|                                                                      | 
|                                                                      |  | Three months ended  |        
|                                                                      |  | April 30, 2007      |         |   | March 31, 2006         |  
|Cash (used in) provided by operating activities                       |  | $                   | (11,065 | ) |                        | $ | 16,456  |  
|Cash (used in) investing activities, excluding short-term investments |  | $                   | (11,310 | ) |                        | $ | (7,387  | )
|Cash provided by (used in) financing activities                       |  | $                   | 5,343   |   |                        | $ | (2,896  | )

Cash, Cash Equivalents and Short-Term Investments

Cash used in operating activities in the first quarter of fiscal 2008 was $11,065. The decrease in cash flows from operating activities as compared to the first quarter
of 2006 was primarily due to an increase in trade accounts receivable in the three months ended April 30, 2007 as compared to decreases in the trade accounts receivable balance in the three months ended March 31, 2006, as more fully
described under Trade Accounts and Term Receivables below. The decrease in cash flows from operating activities was partially offset by (i) a larger decrease in term receivables, long-term in the three months ended April 30,
2007 as compared to the three months ended March 31, 2006 and (ii) an increase in income before taxes as compared to the three months ended March 31, 2006.



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We have entered into agreements to sell qualifying accounts receivable from time to time to certain financing
institutions on a non-recourse basis. During the three months ended April 30, 2007, we sold trade and term receivables in the amounts of $5,822 and $7,319, respectively, for net proceeds of $12,295. During the three months ended March 31,
2006, we sold trade and term receivables in the amounts of $7,818 and $9,265, respectively, for net proceeds of $15,645. We continue to evaluate the economics of the sale of accounts receivables and do not have a set target for the sale of accounts
receivables for fiscal 2008.

Excluding short-term investments, cash used in investing activities in the three months ended April 30, 2007 consisted
of cash paid for the acquisition of businesses and equity interests of $2,248, including payments of earnouts and transaction costs related to prior-year acquisitions of $1,630, and capital expenditures of $9,062. The increase in capital
expenditures was a result of expected infrastructure improvements within facilities and information technology. Cash used for investing activities for the three months ended March 31, 2006 included cash paid for the acquisition of businesses
and equity interests of $4,165, including payments of earnouts and transaction costs related to prior-year acquisitions of $864, and capital expenditures of $3,222.

Cash provided by financing activities for the three months ended April 30, 2007 included (i) cash provided by common stock issuances of $5,800 for stock option exercises and stock purchased under our
Employee Stock Purchase Plans and (ii) cash used in the repurchase of $3,401 of our Floating Rate Convertible Subordinated Debentures due 2023 (Floating Rate Debentures), as more fully described below.

Cash used in financing activities for the three months ended March 31, 2006 included (i) cash provided
by the issuance of $200,000 of 6.25% Convertible Subordinated Debentures due 2026 (6.25% Debentures) in a private offering for net proceeds of $194,250, (ii) cash provided by common stock issuances of $7,859 for stock option exercises and stock
purchased under our Employee Stock Purchase Plans and (iii) cash used in the repurchase and retirement of $171,500 of our 6 7/8% Convertible Subordinated Notes due 2027 (6 7/8% Notes) and $33,350 of our Floating
Rate Debentures, as more fully described below.

Trade Accounts and Term Receivables



|                                                            |  |                     |          |                        |   |        
|----------------------------------------------------------- |  | ------------------- | -------- | ---------------------- | - | -------
|                                                            |  | As ofApril 30, 2007 |          | As ofDecember 31, 2006
|Trade Accounts Receivable, net                              |  | $                   | 278,403  |                        | $ | 263,126
|Term receivables, long-term                                 |  | $                   | 126,891  |                        | $ | 162,157
|Average days sales outstanding in short-term receivables    |  |                     | 132 days |                        |   | 96 days
|Average days sales outstanding in trade accounts receivable |  |                     | 63 days  |                        |   | 43 days

Trade Accounts Receivable, Net

Trade accounts receivable, net increased to $278,403 at April 30, 2007 from $263,126 at December 31, 2006. Excluding the current portion of term receivables of $146,098 and $146,123, respectively, average
days sales outstanding were 63 days and 43 days at April 30, 2007 and December 31, 2006, respectively. Average days sales outstanding for total accounts receivable increased to 132 days at April 30, 2007 from 96 days at
December 31, 2006. The increase in days sales outstanding was primarily due to (i) a decrease in revenues from the three months ended December 31, 2006 to the three months ended April 30, 2007 and (ii) an increase in trade
accounts receivable, net from December 31, 2006 to April 30, 2007, due in large part to the billing of one customer upfront relating to an extended contract. In the quarters where term contract revenue is recorded, only the first twelve
months of the receivable is reflected in current trade accounts receivable. In the following quarters, the amount due in the next twelve months is reflected in current trade accounts receivable without the corresponding revenue. As a result, if our
mix of contracts were to shift to a higher percentage of term contracts, average days sales outstanding would be expected to increase.

Term
Receivables, Long-Term

Term receivables, long-term decreased to $126,891 at April 30, 2007 from $162,157 at December 31, 2006. The balances
were attributable to multi-year term license sales agreements. Balances under term agreements that are due within one year are included in trade accounts receivable and balances that are due in more than one year are included in term receivables,
long-term. We use term agreements as a standard business practice and have a history of successfully collecting under the original payment terms without making concessions on payments, products or services. The decrease from December 31, 2006
was attributable to the change in fiscal year end. Customer contracts continue to be based on calendar quarters and the shift in our fiscal year end has caused term receivables, which would have otherwise stayed long-term, to be classified as
short-term term receivables.



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Property, Plant and Equipment, net



|                                   |  |                     |        |                        |   |       
|---------------------------------- |  | ------------------- | ------ | ---------------------- | - | ------
|                                   |  | As ofApril 30, 2007 |        | As ofDecember 31, 2006
|Property, plant and equipment, net |  | $                   | 90,415 |                        | $ | 86,100

The increase in property, plant and equipment, net was due to normal quarterly capital purchases, offset by
depreciation and disposals. The increase in property, plant and equipment, net for the three months ended April 30, 2007 did not include any individually significant projects.

Accrued Payroll and Related Liabilities



|                                        |  |                     |        |                        |   |        
|--------------------------------------- |  | ------------------- | ------ | ---------------------- | - | -------
|                                        |  | As ofApril 30, 2007 |        | As ofDecember 31, 2006
|Accrued payroll and related liabilities |  | $                   | 65,288 |                        | $ | 105,009

The decrease in accrued payroll and related liabilities reflects (i) the pay out of annual bonus accruals at
December 31, 2006 during the three months ended April 30, 2007 and (ii) the pay out of sales commissions accruals at December 31, 2006 during the four months ended April 30, 2007.

Deferred Revenue



|                 |  |                     |         |                        |   |        
|---------------- |  | ------------------- | ------- | ---------------------- | - | -------
|                 |  | As ofApril 30, 2007 |         | As ofDecember 31, 2006
|Deferred revenue |  | $                   | 145,864 |                        | $ | 116,237

Deferred revenue consists primarily of prepaid annual software support services. The increase in deferred revenue
was primarily due to a higher volume of annual support contract renewals and several new billings in the three months ended April 30, 2007. The increase from December 31, 2006 was also attributable in part to the change in fiscal year end.
Renewal of customer contracts which would have occurred in the first month of the second calendar quarter moved into the last month of our April 2007 first fiscal quarter. The increase in deferred revenue was partially offset by normal amortization
of prepayments on existing contracts.

Income Taxes

As discussed in Note 13 to our Consolidated Financial Statements, as of April 30, 2007 we have approximately $44,115 of liabilities for income taxes associated with uncertain income tax positions. $42,730 of these liabilities are
included in other long-term liabilities in our Condensed Consolidated Balance Sheet as we generally do not anticipate the settlement of the liabilities will require payment of cash within the next twelve months. We are not able to reasonably
estimate the timing of any cash payments required to settle these liabilities, and do not believe that the ultimate settlement of these obligations will materially affect our liquidity. Consequently, there have been no significant changes to our
Contractual Obligations table presented in our Annual Report on Form 10-K for the fiscal year ended December 31, 2006.

Capital Resources

Expenditures for property, plant and equipment increased to $9,062 for the three months ended April 30, 2007 compared to $3,222 for the three
months ended March 31, 2006. The increase in expenditures for property, plant and equipment was a result of expected infrastructure improvements within facilities and information technology. The quarterly fluctuation between the three months
ended April 30, 2007 and the three months ended March 31, 2006 is consistent with quarterly variations noted in 2006. We expect that expenditures for property, plant and equipment for fiscal 2008 to be approximately $40 million.

In the three months ended April 30, 2007, we acquired the technology of Dynamic Soft Analysis, Inc., which resulted in net cash payments of $618.
Additionally, we paid $1,630 related to earnouts on prior years acquisitions. In the three months ended March 31, 2006, we acquired EverCAD, which resulted in net cash payments of $3,301. Additionally, we paid $358 related to earnouts on
prior years acquisitions and $506 for transaction costs and other costs related to prior years acquisitions.

In March 2006, we issued $200,000
of 6.25% Debentures in a private offering pursuant to Rule 144A under the Securities Act of 1933. Also in March 2006, we used the net proceeds of $194,250 from the sale of the 6.25% Debentures plus $14,317



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from our cash balances to retire the 6 7/8% Convertible Subordinated Notes due 2007 and to retire a portion of the Floating Rate Debentures. The 6.25% Debentures have been registered with the SEC for resale under the Securities Act. Interest on the 6.25% Debentures
is payable semi-annually in March and September. The 6.25% Debentures are convertible, under certain circumstances, into our common stock at a conversion price of $17.968 per share for a total of 11,131 shares. These circumstances generally include
(a) the market price of our common stock exceeding 120% of the conversion price, (b) the market price of the 6.25% Debentures declining to less than 98% of the value of the common stock into which the 6.25% Debentures are convertible,
(c) a call for the redemption of the 6.25% Debentures, (d) specified distributions to holders of our common stock, (e) if a fundamental change, such as a change of control, occurs or (f) during the ten trading days prior to, but
not on, the maturity date. Upon conversion, in lieu of shares of our common stock, for each $1,000 principal amount of 6.25% Debentures a holder will receive an amount of cash equal to the lesser of (i) $1,000 or (ii) the conversion value
of the number of shares of our common stock equal to the conversion rate. If such conversion value exceeds $1,000, we will also deliver, at our election, cash or common stock or a combination of cash and common stock with a value equal to the
excess. If a holder elects to convert its 6.25% Debentures in connection with a fundamental change in the company that occurs prior to March 6, 2011, the holder will also be entitled to receive a make whole premium upon conversion in some
circumstances. The 6.25% Debentures rank pari passu with the Floating Rate Convertible Subordinated Debentures due 2023. Some or all of the 6.25% Debentures may be redeemed by us for cash on or after March 6, 2011. Some or all of the 6.25%
Debentures may be redeemed at the option of the holder for cash on March 1, 2013, 2016 or 2021.

In August 2003, we issued $110,000 of Floating
Rate Debentures in a private offering pursuant to SEC Rule 144A. The Floating Rate Debentures have been registered with the SEC for resale under the Securities Act. Interest on the Floating Rate Debentures is payable quarterly in February, May,
August and November at a variable interest rate equal to 3-month LIBOR plus 1.65%. The effective interest rate was 7.01% and 6.18% for the three months ended April 30, 2007 and March 31, 2006, respectively. The Floating Rate Debentures are
convertible, under certain circumstances, into our common stock at a conversion price of $23.40 per share, for a total of 1,985 shares as of April 30, 2007. These circumstances generally include (i) the market price of our common stock
exceeding 120% of the conversion price, (ii) the market price of the Floating Rate Debentures declining to less than 98% of the value of the common stock into which the Floating Rate Debentures are convertible or (iii) a call for
redemption of the Floating Rate Debentures or certain other corporate transactions. The conversion price may be adjusted based on certain future transactions, such as stock splits or stock dividends. We may redeem some or all of the Floating Rate
Debentures for cash on or after August 6, 2007. Some or all of the Floating Rate Debentures may be redeemed at the option of the holder for cash on August 6, 2010, 2013 or 2018.

In March 2006, we used a portion of the proceeds from the issuance of the 6.25% Debentures to retire the
outstanding balance of $171,500 of the 6 7/8% Convertible Subordinated Notes (Notes) due 2007. In connection
with this retirement, we incurred before tax expenses for the early extinguishment of debt of $6,082. Expenses included $4,716 for the call premium on the Notes and $1,366 for the write-off of unamortized deferred debt issuance costs.

During the three months ended April 30, 2007, we purchased on the open market and retired Floating Rate Debentures with a principal balance of
$3,400, for a total purchase price of $3,502. As a result, a principal amount of $46,450 remains outstanding as of April 30, 2007. In connection with this purchase, we incurred a before tax net loss on the early extinguishment of debt of $164,
which included a $102 premium on the repurchased Floating Rate Debentures as well as the write-off of $62 of a portion of unamortized deferred debt issuance costs.

During the three months ended March 2006, we purchased on the open market and retired Floating Rate Debentures with a principal balance of $33,350, for a total purchase price of $32,351. In connection with this purchase, we incurred a
before tax net gain on the early extinguishment of debt of $211, which included a $999 discount on the repurchased Floating Rate Debentures partially offset by the write-off of $788 of unamortized deferred debt issuance costs.

We may elect to purchase or otherwise retire some or all of our Debentures with cash, stock, or other assets from time to time in the open market or privately negotiated
transactions, either directly or through intermediaries, or by tender offer when we believe that market conditions are favorable to do so. Such purchases may have a material effect on our liquidity, financial condition and results of operations.

In June 2005, we entered into a syndicated, senior, unsecured revolving credit facility that replaced an existing three-year revolving credit facility.
Borrowings under the facility are permitted to a maximum of $120,000. This facility is a four-year revolving credit facility, which terminates on June 1, 2009. Under this facility, we have the option to pay interest based on LIBOR with varying
maturities which are commensurate with the borrowing period selected by us, plus a spread of between 1.0% and 1.6% or prime plus a spread of between 0.0% and 0.6%, based on a pricing grid tied to a financial covenant. In addition, commitment fees
are payable on the unused portion of the credit facility at rates between 0.25% and 0.35% based on a pricing grid tied to a financial covenant. The facility contains certain financial and other covenants, including financial covenants requiring the
maintenance of specified liquidity ratios, leverage ratios and minimum tangible net worth. We had no borrowings during the first four months of 2007 and during the year 2006 against this credit facility and had no balance outstanding at
April 30, 2007 and December 31, 2006.



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Our primary ongoing cash requirements will be for product development, operating activities, capital expenditures, debt
service and acquisition opportunities that may arise. Our primary sources of liquidity are cash generated from operations and borrowings under the revolving credit facility. We anticipate that current cash balances, anticipated cash flows from
operating activities, including the effects of financing customer term receivables, amounts available under existing credit facilities, or other available financing sources, such as the issuance of debt or equity securities, will be sufficient to
meet our working capital needs on a short-term and long-term basis. Our sources of liquidity could be adversely affected by a decrease in demand for our products or a deterioration of our financial ratios.

OFF-BALANCE SHEET ARRANGEMENTS

We do not have off-balance sheet
arrangements, financings or other relationships with unconsolidated entities or other persons, also known as special purpose entities. In the ordinary course of business, we lease certain real properties, primarily field office facilities, and
equipment.

We have an 8% interest in M2000, Inc. We assessed our interest in this variable interest entity and concluded that we should not consolidate
that entity based on guidance included in FASB Interpretation No. 46R, Consolidation of Variable Interest Entities. Accordingly, we have accounted for this variable interest entity pursuant to the cost method for investments in
equity securities that do not have readily determinable fair values.

OUTLOOK FOR FISCAL 2008

Revenues for the second quarter of fiscal 2008 are expected to be approximately $200 million, while net income per share for the same period is expected to be
approximately $0.01 to $0.03. Revenues for the year ending January 31, 2008 are expected to be approximately $844 million and earnings per share is expected to be approximately $0.56.



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|Item 3. | Quantitative and Qualitative Disclosures about Market Risk
|------- | ----------------------------------------------------------

(All
numerical references in thousands, except for rates and percentages)

INTEREST RATE RISK

We are exposed to interest rate risk primarily through our investment portfolio, short-term borrowings and long-term notes payable. We do not use derivative financial
instruments for speculative or trading purposes.

We place our investments in instruments that meet high quality credit standards, as specified in our
investment policy. The policy also limits the amount of credit exposure to any one issuer and type of instrument. We do not expect any material loss with respect to our investment portfolio.

The table below presents the carrying value and related weighted-average fixed interest rates for our investment portfolio. The carrying value approximates fair value at
April 30, 2007. In accordance with our investment policy, all investments mature in twelve months or less.



|                                                                                            |  |                |        |                            |      |  
|------------------------------------------------------------------------------------------- |  | -------------- | ------ | -------------------------- | ---- | -
|Principal (notional) amounts in United States dollars (In thousands, except interest rates) |  | CarryingAmount |        | Average FixedInterest Rate |     
|Cash equivalents  fixed rate                                                               |  | $              | 65,670 |                            | 5.23 | %
|Short-term investments  fixed rate                                                         |  |                | 24,403 |                            | 5.29 | %
|                                                                                            |  |                |        |                            |      |  
|Total fixed rate interest bearing instruments                                               |  | $              | 90,073 |                            | 5.24 | %
|                                                                                            |  |                |        |                            |      |  

We had convertible subordinated debentures of $200,000 outstanding with a fixed interest rate of 6.25% at
April 30, 2007. For fixed rate debt, interest rate changes affect the fair value of the debentures but do not affect earnings or cash flow.

We had
floating rate convertible subordinated debentures of $46,450 outstanding with a variable interest rate of 3-month LIBOR plus 1.65% at April 30, 2007. For variable interest rate debt, interest rate changes affect earnings and cash flow. If the
interest rates on the variable rate borrowings were to increase or decrease by 1% for the year and the level of borrowings outstanding remained constant, annual interest expense would increase or decrease by approximately $465.

At April 30, 2007, we had a syndicated, senior, unsecured revolving credit facility. Borrowings under the facility are permitted to a maximum of $120,000. The
facility is a four-year revolving credit facility which terminates on June 1, 2009. Under this facility, we have the option to pay interest based on LIBOR with varying maturities which are commensurate with the borrowing period selected by us,
plus a spread of between 1.0% and 1.6% or prime plus a spread of between 0.0% and 0.6%, based on a pricing grid tied to a financial covenant. As a result, our interest expense associated with borrowings under this credit facility will vary with
market interest rates. In addition, commitment fees are payable on the unused portion of the credit facility at rates between 0.25% and 0.35% based on a pricing grid tied to a financial covenant. We had no borrowings during fiscal 2008, 2006 and the
one month ended January 31, 2007 against this credit facility and had no balance outstanding at April 30, 2007, December 31, 2006 and January 31, 2007, respectively.

We had other short-term borrowings of $4,216 outstanding at April 30, 2007 with variable rates based on market indexes. For variable rate debt, interest rate
changes generally do not affect the fair market value, but do affect future earnings or cash flow. If the interest rates on the variable rate borrowings were to increase or decrease by 1% for the year and the level of borrowings outstanding remained
constant, annual interest expense would increase or decrease by approximately $42.

FOREIGN CURRENCY RISK

We transact business in various foreign currencies and have established a foreign currency hedging program to hedge certain foreign currency forecasted transactions and
exposures from existing assets and liabilities. Derivative instruments held by us consist of foreign currency forward and option contracts. We enter into contracts with counterparties who are major financial institutions and believe the risk related
to default is remote. We do not hold or issue derivative financial instruments for trading purposes.

We enter into foreign currency option contracts for
forecasted revenues and expenses between our foreign subsidiaries. These instruments provide us the right to sell/purchase foreign currencies to/from third parties at future dates with fixed exchange rates. As of April 30, 2007, we had the
following options outstanding:



| |  |  | Japanese yen with contract values totaling $72,652 at a weighted average contract rate of 120.99 to hedge forecasted revenue exposures,
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Euro with contract values totaling $75,310 at a weighted average contract rate of 1.36 to hedge forecasted expense exposures,
| | - |  | -----------------------------------------------------------------------------------------------------------------------------



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| |  |  | British pound with contract values totaling $29,436 at a weighted average contract rate of 1.99 to hedge forecasted expenses exposures.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------

We enter into foreign currency forward contracts to protect against currency exchange risk associated with expected future cash flows
and existing assets and liabilities. Our practice is to hedge a majority of our existing material foreign currency transaction exposures.

The table
provides information as of April 30, 2007 about our foreign currency forward contracts. The information provided is in United States dollar equivalent amounts. The table presents the notional amounts, at contract exchange rates, and the
weighted average contractual foreign currency exchange rates. These contracts mature in the second half of fiscal 2008.



|                   |  |                |         |                              |        |                  |    
|------------------ |  | -------------- | ------- | ---------------------------- | ------ | ---------------- | ---
|                   |  | NotionalAmount |         | WeightedAverageContract Rate |        | ContractCurrency
|Forward Contracts: |  |                |         |                              |        |                  |    
|Euro               |  | $              | 52,874  |                              | 1.35   |                  | USD
|Japanese Yen       |  |                | 37,238  |                              | 116.77 |                  | JPY
|British Pound      |  |                | 31,387  |                              | 1.99   |                  | USD
|Indian Rupee       |  |                | 6,058   |                              | 42.02  |                  | INR
|Polish Zloty       |  |                | 3,212   |                              | 2.78   |                  | PLN
|Swedish Krona      |  |                | 3,064   |                              | 6.77   |                  | SEK
|Korean Won         |  |                | 2,823   |                              | 925.68 |                  | KRW
|Taiwan Dollar      |  |                | 2,648   |                              | 33.04  |                  | TWD
|Canadian Dollar    |  |                | 2,557   |                              | 1.13   |                  | CAD
|Swiss Franc        |  |                | 2,179   |                              | 1.20   |                  | CHF
|Other              |  |                | 7,017   |                              |       |                  |    
|                   |  |                |         |                              |        |                  |    
|Total              |  | $              | 151,057 |                              |        |                  |    
|                   |  |                |         |                              |        |                  |    



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|Item 4. | Controls and Procedures
|------- | -----------------------



|(1) | Evaluation of Disclosure Controls and Procedures
|--- | ------------------------------------------------

We maintain
disclosure controls and procedures that are designed to ensure that information required to be disclosed in our Securities Exchange Act of 1934 reports is recorded, processed, summarized and reported within the time periods specified in the
SECs rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure. In
designing and evaluating the disclosure controls and procedures, management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and
management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

We carried out
an evaluation, under the supervision and with the participation of our management, including our Chief Executive Officer and our Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures as
of the end of the period covered by this report. Based on the foregoing, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective at the reasonable assurance level as of the end of
the period covered by this report.



|(2) | Changes in Internal Controls Over Financial Reporting
|--- | -----------------------------------------------------

There has
been no change in our internal control over financial reporting that occurred during the last fiscal quarter that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.



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PART II. OTHER INFORMATION



|Item 1A. | Risk Factors
|-------- | ------------

The forward-looking statements contained under
Outlook for Fiscal 2008 in Part I, Item 2. Managements Discussion and Analysis of Financial Condition and Results of Operations and all other statements contained in this report that are not statements of
historical fact, including without limitation, statements containing the words believes, expects, projections and words of similar meaning, constitute forward-looking statements that involve a number of risks and
uncertainties that are difficult to predict. Moreover, from time to time, we may issue other forward-looking statements. Forward-looking statements regarding financial performance in future periods, including the statements under Outlook for
Fiscal 2008, do not reflect potential impacts of mergers or acquisitions or other significant transactions or events that have not been announced as of the time the statements are made. Actual outcomes and results may differ materially from
what is expressed or forecast in forward-looking statements. We disclaim any obligation to update forward-looking statements to reflect future events or revised expectations. Our business faces many risks, and set forth below are some of the factors
that could cause actual results to differ materially from the results expressed or implied by our forward-looking statements. Forward-looking statements should be considered in light of these factors.

Intense competition in the EDA industry could materially adversely impact us.

Competition in the EDA industry is intense, which can lead to, among other things, price reductions, longer selling cycles, lower product margins, loss of market share and additional working capital requirements. If
our competitors offer significant discounts on certain products, we may need to lower our prices or offer other favorable terms in order to compete successfully. Any such changes would likely reduce margins and could materially adversely impact our
operating results. Any broad-based changes to our prices and pricing policies could cause new software license and service revenues to decline or be delayed as the sales force implements and our customers adjust to the new pricing policies. Some of
our competitors may bundle software products for promotional purposes or as a long-term pricing strategy. These practices could significantly constrain prices we can charge for our products.

We currently compete primarily with two large companies: Cadence Design Systems, Inc. and Synopsys, Inc. We also compete with numerous smaller companies. We also compete
with manufacturers of electronic devices that have developed, or have the capability to develop, their own EDA products internally.

Our forecasts of
our revenues and earnings outlook may be inaccurate and could materially adversely impact our business or our planned results of operations.

Our
revenues, particularly new software license revenues, are difficult to forecast. We use a pipeline system, a common industry practice, to forecast revenues and trends in our business. Sales personnel monitor the status of potential
business and estimate when a customer will make a purchase decision, the dollar amount of the sale and the products or services to be sold. These estimates are aggregated periodically to generate a sales pipeline. Our pipeline estimates may prove to
be unreliable either in a particular quarter or over a longer period of time, in part because the conversion rate of the pipeline into contracts can be very difficult to estimate and requires management judgment. A variation in the
conversion rate could cause us to plan or budget incorrectly and materially adversely impact our business or our planned results of operations. In particular, a slowdown in customer spending or weak economic conditions generally can reduce the
conversion rate in a particular quarter as purchasing decisions are delayed, reduced in amount or cancelled. The conversion rate can also be affected by the tendency of some of our customers to wait until the end of a fiscal quarter attempting to
obtain more favorable terms.

Fluctuations in quarterly results of operations due to customer seasonal purchasing patterns, the timing of significant
orders and the mix of licenses used to sell our products could materially adversely impact our business and the market price of our common stock.

We have experienced, and may continue to experience, varied quarterly operating results. Various factors affect our quarterly operating results and some of these are not within our control, including customer demand and the timing of
significant orders. We experience seasonality in demand for our products, due to the purchasing cycles of our customers, with revenues in the fourth quarter generally being the highest. We receive a majority of our software product revenues from
current quarter order performance, of which a substantial amount is usually booked in the last few weeks of each quarter. A significant portion of our revenues come from multi-million dollar contracts, the timing of the completion of and the terms
of delivery of which can have a material impact on revenue for a given quarter. If we fail to receive expected orders, particularly large orders, our revenues for that quarter could be materially adversely impacted. In such an event, we could fail
to meet investors expectations, which could have a material adverse impact on our stock price.



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Our revenues are also affected by the mix of licenses entered into where we recognize software product revenues as
payments become due and payable, on a cash basis, or ratably over the license term as compared to revenues recognized at the beginning of the license term. We recognize revenues ratably over the license term, for instance, when the customer is
provided with rights to unspecified or unreleased future products. A shift in the license mix toward increased ratable or due and payable revenue recognition would result in increased deferral of software product revenues to future periods and would
decrease current revenues, which could result in us not meeting near-term revenue expectations.

The gross margin on our software products is greater than
that for our hardware products, software support and professional services. Therefore, our gross margin may vary as a result of the mix of products and services sold. Additionally, the gross margin on software products varies year to year depending
on the amount of royalties due to third parties for the mix of products sold. We also have a significant amount of fixed or relatively fixed costs, such as employee costs and purchased technology amortization, and costs which are committed in
advance and can only be adjusted periodically. As a result, a small failure to reach planned revenues would likely have a relativity large negative effect on resulting earnings. If anticipated revenues do not materialize as expected, our gross
margins and operating results would be materially adversely impacted.

Weakness in the United States and international economies may materially
adversely impact us.

The United States and international economies are cyclical and experience periodic economic downturns, which may have a
material adverse affect on our results of operations. Weakness in these economies may materially adversely impact the timing and receipt of orders for our products and our results of operations. Revenue levels are dependent on the level of
technology capital spending, which includes worldwide expenditures for EDA software, hardware and consulting services.

We are subject to the
cyclical nature of the integrated circuit and electronics systems industries and any future downturns may materially adversely impact us.

Purchases
of our products and services are highly dependent upon new design projects initiated by customers in the integrated circuit (IC) and electronics systems industries. These industries are highly cyclical and are subject to constant and rapid
technological change, rapid product obsolescence, price erosion, evolving standards, short product life cycles and wide fluctuations in product supply and demand. The IC and electronics systems industries regularly experience significant downturns,
often connected with, or in anticipation of, maturing product cycles within such companies or a decline in general economic conditions. These downturns can cause diminished product demand, production overcapacity, high inventory levels and
accelerated erosion of average selling prices. Customers also appear to be reducing the number of EDA vendors with which they do business. If this trend continues, we may have more difficulty obtaining new customers and increasing our market share.

IC and PCB technology evolves rapidly.

The
complexity of ICs and printed circuit boards continues to rapidly increase. In response to this increasing complexity, new design tools and methodologies must be invented or acquired quickly to remain competitive. If we fail to quickly respond to
new technological developments, our products could become obsolete or uncompetitive, which could materially adversely impact our business.

Accounting rules governing revenue recognition may change.

The accounting rules governing software revenue recognition have been
subject to authoritative interpretations that have generally made it more difficult to recognize software product revenues at the beginning of the license period. If this trend continues, new and revised standards and interpretations could
materially adversely impact our ability to meet near-term revenue expectations.

The outcome of Internal Revenue Service and other tax
authorities examinations could have a material adverse affect on us.

The Internal Revenue Service and tax authorities in countries where we
do business regularly examine our tax returns. Significant judgment and estimates are required in determining the provision for income taxes and other tax liabilities. For example, our interim tax provision expense is based on our expectation of
profit and loss by jurisdiction, and if the mix is



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different from our estimates our actual tax expense could be materially different. Our tax expense may also be impacted if our intercompany transactions,
which are required to be computed on an arms-length basis, are challenged and successfully disputed by the tax authorities. Also, our tax expense could be impacted depending on the applicability of withholding taxes on term-based licenses and
related intercompany transactions in certain jurisdictions. In determining the adequacy of income taxes, we assess the likelihood of adverse outcomes resulting from the Internal Revenue Service and other tax authorities examinations. The
ultimate outcome of these examinations cannot be predicted with certainty. Should the Internal Revenue Service or other tax authorities assess additional taxes as a result of examinations, we may be required to record charges to operations that
could have a material impact on the results of operations, financial position or cash flows. We were issued a Revenue Agents Report in March 2007. See Provision for Income Taxes discussion in Part I, Item 2.
Managements Discussion and Analysis of Financial Condition and Results of Operations for additional discussion.

Forecasting our
tax rate is complex and subject to uncertainty.

Forecasts of our income tax position and resultant effective tax rate are complex and subject to
uncertainty as our tax position for each year combines: (a) the effects of a mix of profits (losses) earned by us and our subsidiaries in tax jurisdictions with a broad range of income tax rates, (b) changes in valuation allowances on our
deferred tax assets, (c) taxes, interest or penalties resulting from tax audits and (d) changes in the tax laws or the interpretation of such tax laws. In order to forecast our global tax rate, pre-tax profits and losses by jurisdiction
are estimated and tax expense by jurisdiction is calculated. If the mix of profits and losses or effective tax rates by jurisdiction are different than those estimates, our actual tax rate could be materially different than forecast.

Customer payment defaults could materially adversely impact us.

We use fixed-term license agreements as a standard business practice with customers we believe are credit-worthy. These multi-year, multi-element term license agreements are typically three years in length and have payments spread over the
license term. The complexity of these agreements tends to increase the risk associated with collectibility from customers that can arise for a variety of reasons including ability to pay, product dissatisfaction, disagreements and disputes. If we
are unable to collect under these agreements, our results of operations could be materially adversely impacted. We use these fixed-term license agreements as a standard business practice and have a history of successfully collecting under the
original payment terms without making concessions on payments, products or services. If we no longer had a history of collecting without providing concessions on term agreements, then revenue would be required to be recognized as the payments become
due and payable over the license term. This change would have a material impact on our results.

There are limitations on the effectiveness of
controls.

We do not expect that disclosure controls or internal control over financial reporting will prevent all error and all fraud. A control
system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the control systems objectives will be met. Further, the design of a control system must reflect the fact that there are resource
constraints and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud,
if any, have been detected. Failure of our control systems to prevent error or fraud could materially adversely impact us.

The lengthy sales cycle
for our products and services and delay in customer completion of projects, make the timing of our revenues difficult to predict.

We have a lengthy
sales cycle that generally extends between three and nine months. A lengthy customer evaluation and approval process is generally required due to the complexity and expense associated with our products and services. Consequently, we may incur
substantial expenses and devote significant management effort and expense to develop potential relationships that do not result in agreements or revenues and may prevent us from pursuing other opportunities. In addition, sales of our products and
services may be delayed if customers delay approval or commencement of projects due to customers budgetary constraints, internal acceptance review procedures, timing of budget cycles or timing of competitive evaluation processes.

Any loss of our leadership position in certain segments of the EDA market could have a material adverse affect on us.

The industry in which we compete is characterized by very strong leadership positions in specific segments of the EDA market. For example, one company may enjoy a large
percentage of sales in the physical verification segment of the market while another will have a similarly strong position in mixed-signal simulation. These strong leadership positions can be maintained for significant periods of time as the
software is difficult to master and customers are disinclined to make changes



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once their employees, as well as others in the industry, have developed familiarity with a particular software product. For these reasons, much of our
profitability arises from niche areas in which we are the leader. Conversely, it is difficult for us to achieve significant profits in niche areas where other companies are the leaders. If for any reason we lose our leadership position in a niche,
we could be materially adversely impacted.

Our business is subject to evolving corporate governance and public disclosure regulations that have
increased both costs and the risk of noncompliance, which could have a material adverse impact on us.

Because our common stock is publicly traded
on the NASDAQ Stock Market, we are subject to rules and regulations issued by a number of governmental and self-regulated organizations, including the SEC, NASDAQ and the Public Company Accounting Oversight Board, which monitors the accounting
practices of public companies. Many of these regulations continue to evolve, making compliance difficult and uncertain. In particular, Section 404 of the Sarbanes-Oxley Act of 2002 and related regulations have required us to include a
management assessment of our internal controls over financial reporting and auditor attestation of that assessment in our annual reports. This effort has required, and continues to require, the commitment of significant financial and managerial
resources. A failure to complete a favorable assessment and obtain an auditors attestation could have a material adverse impact on us.

We may
not realize revenues as a result of our investments in research and development.

We incur substantial expense to develop new software products.
Research and development activities are often performed over long periods of time. This effort may not yield a successful product offering or the product may not satisfy customer requirements. As a result, we would realize little or no revenues
related to our investment in research and development.

We may acquire other companies and may not successfully integrate them.

The industry in which we compete has seen significant consolidation in recent years. During this period, we have acquired numerous businesses and have frequently been
in discussions with potential acquisition candidates, and we may acquire other businesses in the future. While we expect to carefully analyze all potential transactions before committing to them, we cannot assure that any transaction that is
completed will result in long-term benefits to us or our shareholders or that we will be able to manage the acquired businesses effectively. In addition, growth through acquisition involves a number of risks. If any of the following events occurs
after we acquire another business, it could materially adversely impact us:



| |  |  | difficulties in combining previously separate businesses into a single unit;
| | - |  | ----------------------------------------------------------------------------



| |  |  | the substantial diversion of managements attention from ongoing business when integrating the acquired business;
| | - |  | -----------------------------------------------------------------------------------------------------------------



| |  |  | the discovery after the acquisition has been completed of previously unknown liabilities assumed with the acquired business;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------



| |  |  | the failure to realize anticipated benefits, such as cost savings and increases in revenues;
| | - |  | --------------------------------------------------------------------------------------------



| |  |  | the failure to retain key personnel of the acquired business;
| | - |  | -------------------------------------------------------------



| |  |  | difficulties related to assimilating the products of an acquired business in, for example, distribution, engineering and customer support areas;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | unanticipated costs;
| | - |  | --------------------



| |  |  | adverse impacts on existing relationships with suppliers and customers; and
| | - |  | ---------------------------------------------------------------------------



| |  |  | failure to understand and compete effectively in markets in which we have limited experience.
| | - |  | ---------------------------------------------------------------------------------------------

Acquired businesses may not perform as projected, which could result in impairment of acquisition-related intangible assets. Additional challenges include integration of
sales channels, training and education of the sales force for new product offerings, integration of product development efforts, integration of systems of internal controls and integration of information systems. Accordingly, in any acquisition
there will be uncertainty as to the achievement and timing of projected synergies, cost savings and sales levels for acquired products. All of these factors can impair our ability to forecast, meet revenues and earnings targets and manage
effectively our business for long-term growth. We cannot assure that we can effectively meet these challenges.



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Mergers of our customers appear to be increasing.

A significant number of mergers in the semiconductor and electronics industries have occurred and we believe more are likely. Mergers of our customers can reduce the
total level of purchases of our software and services, and in some cases, increase customers bargaining power in negotiations with their suppliers, including Mentor Graphics.

Risks of international operations and the effects of foreign currency fluctuations can materially adversely impact our business and operating results.

We obtain more than half of our revenues from customers outside the United States and we generate approximately one-third of our expenses outside the United States.
Significant changes in exchange rates can have an adverse impact on us. For further discussion of foreign currency effects, see Effects of Foreign Currency Fluctuations discussion in Part I, Item 2. Managements
Discussion and Analysis of Financial Condition and Results of Operations. In addition, international operations subject us to other risks including longer receivables collection periods, changes in a specific countrys or regions
economic or political conditions, trade protection measures, import or export licensing requirements, loss or modification of exemptions for taxes and tariffs, limitations on repatriation of earnings and difficulties with licensing and protecting
our intellectual property rights.

The delay in production of components or the ordering of excess components for our emulation hardware products
could materially adversely impact us.

The success of our emulation product depends on our ability to procure hardware components on a timely basis
from a limited number of suppliers, create stable software for use on the product, assemble and ship hardware and software systems on a timely basis with appropriate quality control, develop distribution and shipment processes, manage inventory and
related obsolescence issues and develop processes to deliver customer support for hardware. Our inability to be successful in any of the foregoing could materially adversely impact us.

We generally commit to purchase component parts from suppliers based on sales forecasts of our emulation products. If we cannot change or be released from these non-cancelable purchase commitments, and if orders for
our products do not materialize, we could incur significant costs related to the purchase of excess components which could become obsolete before we can use them. Additionally, a delay in production of the components could materially adversely
impact our operating results.

Our failure to adequately protect our proprietary rights or to obtain software or other intellectual property licenses
could materially adversely impact us.

Our success depends, in large part, upon our proprietary technology. We generally rely on patents,
copyrights, trademarks, trade secret laws, licenses and restrictive agreements to establish and protect our proprietary rights in technology and products. Despite precautions we may take to protect our intellectual property, we cannot assure that
third parties will not try to challenge, invalidate or circumvent these protections. The companies in the EDA industry, as well as entities and persons outside the industry, are obtaining patents at a rapid rate. Many of these entities have
substantially larger patent portfolios than we have. As a result, we may on occasion be forced to engage in costly patent litigation to protect our rights or defend our customers rights. We may also need to settle these claims on terms that
are unfavorable; such settlements could result in the payment of significant damages or royalties, or force us to stop selling or redesign one or more products. We cannot assure that the rights granted under our patents will provide us with any
competitive advantage, that patents will be issued on any of our pending applications or that future patents will be sufficiently broad to protect our technology. Furthermore, the laws of foreign countries may not protect our proprietary rights in
those countries to the same extent as United States law protects these rights in the United States.

Some of our products include software or other
intellectual property licensed from third parties, and we may have to seek new licenses or renew existing licenses for software and other intellectual property in the future. Our inability to obtain software or other intellectual property licenses
or rights from third parties on favorable terms could materially adversely impact us.

Future litigation may materially adversely impact us.

Future litigation may result in monetary damages, injunctions against future product sales and substantial unanticipated legal costs and divert the
efforts of management personnel, any and all of which could materially adversely impact us.



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Errors or defects in our products and services could expose us to liability and harm our reputation.

Our customers use our products and services in designing and developing products that involve a high degree of technological complexity and have
unique specifications. Due to the complexity of the systems and products with which we work, some of our products and designs can be adequately tested only when put to full use in the marketplace. As a result, our customers or their end users may
discover errors or defects in our software or the systems we design, or the products or systems incorporating our designs and intellectual property may not operate as expected. Errors or defects could result in:



| |  |  | loss of current customers and loss of, or delay in, revenue and loss of market share;
| | - |  | -------------------------------------------------------------------------------------



| |  |  | failure to attract new customers or achieve market acceptance;
| | - |  | --------------------------------------------------------------



| |  |  | diversion of development resources to resolve the problems resulting from errors or defects; and
| | - |  | ------------------------------------------------------------------------------------------------



| |  |  | increased service costs.
| | - |  | ------------------------

Our failure to
attract and retain key employees may harm us.

We depend on the efforts and abilities of our senior management, our research and development staff
and a number of other key management, sales, support, technical and services personnel. Competition for experienced, high-quality personnel is intense, and we cannot assure that we can continue to recruit and retain such personnel. Our failure to
hire and retain such personnel would impair our ability to develop new products and manage our business effectively.

Terrorist attacks and other
acts of violence or war may materially adversely impact the markets on which our securities trade, the markets in which we operate, our operations and our profitability.

Terrorist attacks may negatively affect our operations and investment in our business. These attacks or armed conflicts may directly impact our physical facilities or those of our suppliers or customers. Furthermore,
these attacks may make travel more difficult and expensive and ultimately affect our revenues.

Any armed conflict entered into by the United States could
have an adverse impact on our revenues and our ability to deliver products to our customers. Political and economic instability in some regions of the world may also result from an armed conflict and could negatively impact our business. We
currently have operations in Pakistan, Egypt and Israel, countries that may be particularly susceptible to this risk. The consequences of any armed conflict are unpredictable, and we may not be able to foresee events that could have an adverse
impact on us.

More generally, any of these events could cause consumer confidence and spending to decrease or result in increased volatility in the United
States and worldwide financial markets and economy. They also could result in economic recession in the United States or abroad. Any of these occurrences could have a significant impact on our operating results, revenues and costs and may result in
volatility of the market price for our common stock.

Our articles of incorporation, Oregon law and our shareholder rights plan may have
anti-takeover effects.

Our board of directors has the authority, without action by the shareholders, to designate and issue up to 1,200,000 shares
of incentive stock in one or more series and to designate the rights, preferences and privileges of each series without any further vote or action by the shareholders. Additionally, the Oregon Control Share Act and the Business Combination Act limit
the ability of parties who acquire a significant amount of voting stock to exercise control over us. These provisions may have the effect of lengthening the time required to acquire control of us through a proxy contest or the election of a majority
of the board of directors. In February 1999, we adopted a shareholder rights plan, which has the effect of making it more difficult for a person to acquire control of us in a transaction not approved by our board of directors. The potential issuance
of incentive stock, the provisions of the Oregon Control Share Act and the Business Combination Act and our shareholder rights plan may have the effect of delaying, deferring or preventing a change of control of us, may discourage bids for our
common stock at a premium over the market price of our common stock and may materially adversely impact the market price of, and the voting and other rights of the holders of, our common stock.



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Our debt obligations expose us to risks that could materially adversely impact our business, operating results and
financial condition, and could prevent us from fulfilling our obligations under such indebtedness.

We have a substantial level of indebtedness. As
of April 30 2007, we had $258.5 million of outstanding indebtedness, which includes $46.5 million of Floating Rate Convertible Subordinated Debentures due 2023 (Floating Rate Debentures), $200 million of 6.25% Convertible Subordinated
Debentures due 2026 (6.25% Debentures) and $12.0 million in short-term borrowings. This level of indebtedness among other things could:



| |  |  | make it difficult for us to satisfy our payment obligations on our debt;
| | - |  | ------------------------------------------------------------------------



| |  |  | make it difficult for us to incur additional indebtedness or obtain any necessary financing in the future for working capital, capital expenditures, debt service,
acquisitions or general corporate purposes
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | limit our flexibility in planning for or reacting to changes in our business;
| | - |  | -----------------------------------------------------------------------------



| |  |  | reduce funds available for use in our operations;
| | - |  | -------------------------------------------------



| |  |  | make us more vulnerable in the event of a downturn in our business;
| | - |  | -------------------------------------------------------------------



| |  |  | make us more vulnerable in the event of an increase in interest rates if we must incur new debt to satisfy our obligations under the Floating Rate Debentures and
6.25% Debentures; or
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | place us at a possible competitive disadvantage relative to less leveraged competitors and competitors that have greater access to capital resources
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------

If we experience a decline in revenues due to any of the factors described in Part II, Item 1A. Risk Factors, we could
have difficulty paying amounts due on our indebtedness. Any default under our indebtedness could have a material adverse impact on our business, operating results and financial condition.



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|Item 6. | Exhibits
|------- | --------



| |  |      |  |                                                                                                                                                                                             
| |  | ---- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| |  | 4.A  |  | Third Amendment to Credit Agreement dated as of April 12, 2007 between the Company, Bank of America, N.A. as agent and other lenders.                                                       
| |  |     
| |  | 31.1 |  | Certification of Chief Executive Officer of Registrant Pursuant to SEC Rule 13a-14(a)/15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.                      
| |  |     
| |  | 31.2 |  | Certification of Chief Financial Officer of Registrant Pursuant to SEC Rule 13a-14(a)/15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.                      
| |  |     
| |  | 32   |  | Certification of Chief Executive Officer and Chief Financial Officer of Registrant Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of
2002.



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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be
signed on its behalf by the undersigned thereunto duly authorized.



|                    |  |                            
|------------------- |  | ---------------------------
|Dated: June 8, 2007 |  | MENTOR GRAPHICS CORPORATION
|                    |  | (Registrant)               
|                    | 
|                    |  | /S/ GREGORY K. HINCKLEY    
|                    |  | Gregory K. Hinckley        
|                    |  | President                  



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