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

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

| Delaware                                                 | 75-1225149                        |
|----------------------------------------------------------|-----------------------------------|
| (State of Incorporation)                                 | (IRS Employer Identification No.) |
|                                                     |                              |
| 905 E. Walnut, Garland, Texas                            | 75040                             |
| (Address of Principal Executive Office)                  | (Zip Code)                        |
|                                                     |                              |
| Registrant’s Telephone Number, including Area Code | (972) 272-3571                    |

| Large accelerated filer  o                | Accelerated filer  o   |
|------------------------------------------------|-----------------------------|
| Non-accelerated filer    o | Smaller reporting company x |

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| PART I-FINANCIAL INFORMATION                      |
|---------------------------------------------------|
|                                              |   |
| ITEM 1 -                                          | FINANCIAL STATEMENTS |
|                                              |   |
|                                              | Condensed Balance Sheets as of February 26, 2011 (unaudited) and November 30, 2010 |
|                                              | Condensed Statements of Operations for the three months ended February 26, 2011 and February 27, 2010 (unaudited) |
|                                              | Condensed Statements of Cash Flows for the three months ended February 26, 2011 and February 27, 2010 (unaudited) |
|                                              | Notes to Condensed Financial Statements (unaudited) |
|                                              |   |
| ITEM 2 -                                          | MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS |
|                                              |   |
| ITEM 3 -                                          | QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK |
|                                              |   |
| ITEM 4 -                                          | CONTROLS AND PROCEDURES |
|                                              |   |
|                                              |   |
| PART II  -  OTHER INFORMATION |
|                                              |   |
| ITEM 1 -                                          | LEGAL PROCEEDINGS |
| ITEM 1A -                                         | RISK FACTORS |
| ITEM 2 -                                          | UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS |
| ITEM 3 -                                          | DEFAULTS UPON SENIOR SECURITIES |
| ITEM 4 -                                          | REMOVED AND RESERVED |
| ITEM 5 -                                          | OTHER INFORMATION |
| ITEM 6 -                                          | EXHIBITS |
|                                              |   |
|                                              |   |
| SIGNATURES                                        |

----

| ASSETS                                                                                                                                                                                                                                                                                            |   |        |              |   |     |   |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------|-------------------|--------|----------|--------|
|                                                                                                                                                                                                                                                                                              |   | (Unaudited) |              |   |     |   |
| CURRENT ASSETS                                                                                                                                                                                                                                                                                    |   | 02/26/11    |              |   | 11/30/10 |   |
|                                                                                                                                                                                                                                                                                              |   |        |              |   |     |   |
| Cash and cash equivalents                                                                                                                                                                                                                                                                         |   | $           | 8,278             |   |     | $      | 9,085 |   |
|         Short-term investment                                                                                                                                                                                                                             |   |        | 2,000             |   |     |   | 1,000 |   |
|         Accounts receivable                                                                                                                                                                                                                               |   |        | 2,688             |   |     |   | 2,893 |   |
| Inventories:                                                                                                                                                                                                                                                                                      |   |        |              |   |     |   |   |   |
| Raw materials                                                                                                                                                                                                                                                                                     |   |        | 2,394             |   |     |   | 2,302 |   |
| Work-in process                                                                                                                                                                                                                                                                                   |   |        | 2,720             |   |     |   | 2,819 |   |
| Total inventories                                                                                                                                                                                                                                                                                 |   |        | 5,114             |   |     |   | 5,121 |   |
| Prepaid expenses and other current assets                                                                                                                                                                                                                                                         |   |        | 294               |   |     |   | 239 |   |
| Deferred income tax                                                                                                                                                                                                                                                                               |   |        | 913               |   |     |   | 913 |   |
|                              Total current assets                                                                                                |   |        | 19,287            |   |     |   | 19,251 |   |
|                                                                                                                                                                                                                                                                                              |   |        |              |   |     |   |   |   |
| PROPERTY, PLANT AND EQUIPMENT, at cost:                                                                                                                                                                                                                                                           |   |        |              |   |     |   |   |   |
| Land                                                                                                                                                                                                                                                                                              |   |        | 80                |   |     |   | 80 |   |
| Buildings                                                                                                                                                                                                                                                                                         |   |        | 498               |   |     |   | 498 |   |
| Facility improvements                                                                                                                                                                                                                                                                             |   |        | 1,024             |   |     |   | 882 |   |
| Machinery and equipment                                                                                                                                                                                                                                                                           |   |        | 7,044             |   |     |   | 6,936 |   |
| Furniture and fixtures                                                                                                                                                                                                                                                                            |   |        | 637               |   |     |   | 632 |   |
|                       Total property, plant, and equipment                                                                                                                          |   |        | 9,283             |   |     |   | 9,028 |   |
| Less accumulated depreciation                                                                                                                                                                                                                                                                     |   |        | (7,652            | )      |     |   | (7,582 | ) |
|                                      Net property, plant, and equipment                                  |   |        |   1,631 |   |     |   | 1,446 |   |
|                                                                                                                                                                                                                                                                                              |   |        |              |   |     |   |   |   |
|                                       Total assets                                                  |   | $           | 20,918            |   |     | $      | 20,697 |   |
|                                                                                                                                                                                                                                                                                              |   |        |              |   |     |   |   |   |
| LIABILITIES AND SHAREHOLDERS’ EQUITY                                                                                                                                                                                                                                                        |   |        |              |   |     |   |   |   |
|                                                                                                                                                                                                                                                                                              |   |        |              |   |     |   |   |   |
| CURRENT LIABILITIES:                                                                                                                                                                                                                                                                              |   |        |              |   |     |   |   |   |
| Accounts payable                                                                                                                                                                                                                                                                                  |   | $           | 639               |   |     | $      | 700 |   |
| Accrued compensation                                                                                                                                                                                                                                                                              |   |        | 421               |   |     |   | 766 |   |
| Other accrued liabilities                                                                                                                                                                                                                                                                         |   |        | 482               |   |     |   | 573 |   |
|         Deferred revenue                                                                                                                                                                                                                                  |   |        | 758               |   |     |   | 834 |   |
| Income taxes payable                                                                                                                                                                                                                                                                              |   |        | 449               |   |     |   | 75 |   |
|                         Total current liabilities                                                                                                                         |   |        | 2,749             |   |     |   | 2,948 |   |
|                                                                                                                                                                                                                                                                                              |   |        |              |   |     |   |   |   |
| DEFERRED INCOME TAXES                                                                                                                                                                                                                                                                             |   |        | 277               |   |     |   | 277 |   |
|                                                                                                                                                                                                                                                                                              |   |        |              |   |     |   |   |   |
| SHAREHOLDERS’ EQUITY                                                                                                                                                                                                                                                                        |   |        |              |   |     |   |   |   |
| Common stock, ($.10 par value), authorized 10,000,000            shares, 3,078,315 issued and 2,578,315 outstanding at            February 26, 2011 and November 30, 2010 |   |        | 308               |   |     |   | 308 |   |
| Paid-in capital                                                                                                                                                                                                                                                                                   |   |        | 885               |   |     |   | 885 |   |
|        Treasury stock, 500,000 shares, at cost                                                                                                                                                                                                                 |   |        | (1,250            | )      |     |   | (1,250 | ) |
| Retained earnings                                                                                                                                                                                                                                                                                 |   |        | 17,949            |   |     |   | 17,529 |   |
|                                                                                                                                                                                                                                                                                              |   |        |              |   |     |   |   |   |
|                                 Total shareholders’ equity                                                                  |   |        | 17,892            |   |     |   | 17,472 |   |
|                                                                                                                                                                                                                                                                                              |   |        |              |   |     |   |   |   |
|                                         Total liabilities and shareholders’ equity  |   | $           | 20,918            |   |     | $      | 20,697 |   |
|                                                                                                                                                                                                                                                                                              |   |        |              |   |     |   |   |   |

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|                                                                                                                                                                                                                                            |   | For the three months ended |         |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|----------------------------|--------------|
|                                                                                                                                                                                                                                            |   | 02/26/11                   |         |   | 02/27/10 |   |
|                                                                                                                                                                                                                                            |   |                       |         |   |   |   |
|                                                                                                                                                                                                                                            |   |                       |         |   |   |   |
| NET SALES                                                                                                                                                                                                                                       |   | $                          | 5,590        |   |   | $ | 4,576 |   |
|                                                                                                                                                                                                                                            |   |                       |         |   |   |   |   |   |
| COST AND EXPENSES:                                                                                                                                                                                                                              |   |                       |         |   |   |   |   |   |
|                                                                                                                                                                                                                                            |   |                       |         |   |   |   |   |   |
|     Cost of goods sold                                                                                                                                                                                                      |   |                       | (3,402       | ) |   |   | (2,824 | ) |
|                                                                                                                                                                                                                                            |   |                       |         |   |   |   |   |   |
|     Research and development                                                                                                                                                                                                |   |                       | (149         | ) |   |   | (147 | ) |
|                                                                                                                                                                                                                                            |   |                       |         |   |   |   |   |   |
|     Selling, general & administrative expenses                                                                                                                                                                          |   |                       |  (980   | ) |   |   |  (928 | ) |
|                                                                                                                                                                                                                                            |   |                       |         |   |   |   |   |   |
|                                     Total cost and expenses |   |                       | (4,531       | ) |   |   | (3,899 | ) |
|                                                                                                                                                                                                                                            |   |                       |         |   |   |   |   |   |
| OPERATING INCOME BEFORE INTEREST           AND INCOME TAXES                                                                                                                              |   |                       | 1,059        |   |   |   | 677 |   |
|                                                                                                                                                                                                                                            |   |                       |         |   |   |   |   |   |
|     Interest and other income                                                                                                                                                                                               |   |                       | -            |   |   |   | 81 |   |
|                                                                                                                                                                                                                                            |   |                       |         |   |   |   |   |   |
| INCOME BEFORE TAXES                                                                                                                                                                                                                             |   | $                          | 1,059 8 |   |   | $ | 758 8 |   |
|                                                                                                                                                                                                                                            |   |                       |         |   |   |   |   |   |
|     Provision for taxes                                                                                                                                                                                                     |   |                       | (381         | ) |   |   | (273 | ) |
|                                                                                                                                                                                                                                            |   |                       |         |   |   |   |   |   |
| NET INCOME                                                                                                                                                                                                                                      |   | $                          | 678          |   |   | $ | 485 |   |
| NET INCOME PER SHARE, BASIC AND DILUTED                                                                                                                                                                                                         |   | $                          | 0.26         |   |   | $ | 0.19 |   |
|                                                                                                                                                                                                                                            |   |                       |         |   |   |   |   |   |
| DIVIDENDS PER SHARE                                                                                                                                                                                                                             |   | $                          | 0.10         |   |   | $ | 0.10 |   |
|                                                                                                                                                                                                                                            |   |                       |         |   |   |   |   |   |
| WEIGHTED AVERAGE OF SHARES, basic and diluted                                                                                                                                                                                                   |   |                       | 2,578,315    |   |   |   | 2,578,315 |   |

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|                                                                                                                                                                                                                                                      |   | For three months ended |       |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|------------------------|------------|
|                                                                                                                                                                                                                                                      |   | 2/26/11                |       |   | 2/27/10 |   |
| CASH FLOWS FROM OPERATING ACTIVITIES:                                                                                                                                                                                                                     |   |                   |       |   |   |   |
| Net income                                                                                                                                                                                                                                                |   | $                      | 678        |   |   | $ | 485 |   |
| Adjustments to reconcile net income to                                                                                                                                                                                                                    |   |                   |       |   |   |   |   |   |
|            net cash provided by (used in) operating activities:                                                                                                                                    |   |                   |       |   |   |   |   |   |
|     Depreciation and amortization                                                                                                                                                                                                     |   |                   | 70         |   |   |   | 62 |   |
| Changes in certain current assets and liabilities:                                                                                                                                                                                                        |   |                   |       |   |   |   |   |   |
|     (Increase) decrease in accounts receivable                                                                                                                                                                                        |   |                   | 205        |   |   |   | (798 | ) |
|     (Increase) decrease in inventories                                                                                                                                                                                                |   |                   | 7          |   |   |   | (602 | ) |
|                    Increase in prepaid expenses and other current assets                                                                                   |   |                   | (55        | ) |   |   | (72 | ) |
|     Decrease in deferred revenue                                                                                                                                                                                                      |   |                   | (76        | ) |   |   | (273 | ) |
|     Increase (decrease) in accounts payable                                                                                                                                                                                           |   |                   | (61        | ) |   |   | 342 |   |
|     Decrease in accrued compensation                                                                                                                                                                                                  |   |                   | (345       | ) |   |   | (123 | ) |
|     Increase (decrease) in other accrued liabilities                                                                                                                                                                                  |   |                   | (91        | ) |   |   | 11 |   |
|     Increase in income taxes payable                                                                                                                                                                                                  |   |                   |  374  |   |   |   |  260 |   |
|                                                                                                                                                                                                                                                      |   |                   |       |   |   |   |   |   |
|                                  Net cash provided by (used in) operating activities |   |                   |  706  |   |   |   |  (708 | ) |
|                                                                                                                                                                                                                                                      |   |                   |       |   |   |   |   |   |
| CASH FLOWS FROM INVESTING ACTIVITIES:                                                                                                                                                                                                                     |   |                   |       |   |   |   |   |   |
|         Purchase of short term investments                                                                                                                                                                        |   |                   | (1,000     | ) |   |   | - |   |
|         Additions to property, plant and equipment                                                                                                                                                                |   |                   | (255       | ) |   |   | (152 | ) |
|                                                                                                                                                                                                                                                      |   |                   |       |   |   |   |   |   |
|                          Net cash used in investing activities                                                               |   |                   | (1,255     | ) |   |   | (152 | ) |
|                                                                                                                                                                                                                                                      |   |                   |       |   |   |   |   |   |
| CASH FLOWS FROM FINANCING ACTIVITIES                                                                                                                                                                                                                      |   |                   |       |   |   |   |   |   |
|          Cash dividend                                                                                                                                                                                       |   |                   |  (258 | ) |   |   |  (258 | ) |
|                                                                                                                                                                                                                                                      |   |                   |       |   |   |   |   |   |
|                                   Net cash used in financing activities         |   |                   | (258       | ) |   |   | (258 | ) |
|                                                                                                                                                                                                                                                      |   |                   |       |   |   |   |   |   |
| Net change in cash and cash equivalents                                                                                                                                                                                                                   |   |                   | (807       | ) |   |   | (1,118 | ) |
|                                                                                                                                                                                                                                                      |   |                   |       |   |   |   |   |   |
| Cash and cash equivalents at beginning of period                                                                                                                                                                                                          |   |                   | 9,085      |   |   |   | 6,802 |   |
|                                                                                                                                                                                                                                                      |   |                   |       |   |   |   |   |   |
| Cash and cash equivalents at end of period                                                                                                                                                                                                                |   | $                      | 8,278      |   |   | $ | 5,684 |   |
|                                                                                                                                                                                                                                                      |   |                   |       |   |   |   |   |   |
| Supplemental Cash Flow Disclosure:                                                                                                                                                                                                                        |   |                   |       |   |   |   |   |   |
|                                                                                                                                                                                                                                                      |   |                   |       |   |   |   |   |   |
|            Cash paid for income taxes                                                                                                                                                         |   | $                 |  7    |   |   | $  |  13 |   |

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| Buildings               | 15   |   |
|-------------------------|------|--------|
| Facility improvements   | 8-15 |   |
| Machinery and equipment | 5-10 |   |
| Furniture and fixtures  | 5-8  |   |

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|                                                                                                                                                                                                                                            |   |        Three months ended |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|---------------------------------------------------------|
|                                                                                                                                                                                                                                            |   | 2/26/2011                                               |   | 2/27/2010 |
| NET SALES                                                                                                                                                                                                                                       |   |                                                    | 100.0 | % |   |   | 100.0 | % |
|                                                                                                                                                                                                                                            |   |                                                    |   |   |   |   |   |   |
| COST AND EXPENSES:                                                                                                                                                                                                                              |   |                                                    |   |   |   |   |   |   |
|     Cost of Goods Sold                                                                                                                                                                                                      |   |                                                    | 60.9 | % |   |   | 61.7 | % |
|     Research and development                                                                                                                                                                                                |   |                                                    | 2.7 | % |   |   | 3.2 | % |
|     Selling, general & administrative expenses                                                                                                                                                                          |   |                                                    | 17.5 | % |   |   | 20.3 | % |
|                                     Total cost and expenses |   |                                                    | 81.1 | % |   |   | 85.2 | % |
|                                                                                                                                                                                                                                            |   |                                                    |   |   |   |   |   |   |
| OPERATING INCOME BEFORE INTEREST                                                                                                                                                                                                                |   |                                                    |   |   |   |   |   |   |
|            AND INCOME TAXES                                                                                                                                                              |   |                                                    | 18.9 | % |   |   | 14.8 | % |
|                                                                                                                                                                                                                                            |   |                                                    |   |   |   |   |   |   |
|     Interest and other income                                                                                                                                                                                               |   |                                                    | 0.0 | % |   |   | 1.8 | % |
|                                                                                                                                                                                                                                            |   |                                                    |   |   |   |   |   |   |
| INCOME BEFORE TAXES                                                                                                                                                                                                                             |   |                                                    | 18.9 | % |   |   | 16.6 | % |
|                                                                                                                                                                                                                                            |   |                                                    |   |   |   |   |   |   |
|     Provision for taxes                                                                                                                                                                                                     |   |                                                    | 6.8 | % |   |   | 6.0 | % |
|                                                                                                                                                                                                                                            |   |                                                    |   |   |   |   |   |   |
| NET INCOME                                                                                                                                                                                                                                      |   |                                                    | 12.1 | % |   |   | 10.6 | % |

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| (a)   | Evaluation of disclosure controls and procedures. |
|-----------------|---------------------------------------------------|

| (b)   | Changes in internal controls. |
|-----------------|-------------------------------|

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| 31.1 | Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes- Oxley Act of 2002                                                   |
|------|-------------------------------------------------------------------------------------------------------------------------------------------------------|
| 31.2 | Certification of Chief Accounting Officer pursuant to Section 302 of the  Sarbanes- Oxley Act of 2002                                            |
| 32.1 | Certification of Chief Executive Officer pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley act of 2002.    |
| 32.2 | Certification of Chief Accounting Officer pursuant to 18 U. S. C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley act of 2002. |

| April 12, 2011 | /s/ Mark King                 |
|----------------|-------------------------------|
| Date           | Mark King                     |
|           | Chief Executive Officer       |
|           |                          |
|           |                          |
|           |                          |
| April 12, 2011 | /s/ Patrick Cefalu            |
| Date           | Patrick Cefalu           |
|           | Chief Financial Officer  |

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