----

----

|   |   |                                                                                    |
|--------|--------|-----------------------------------------------------------------------------------------|
| 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 filero                        | Smaller reporting company x |
| (Do not check if a smaller reporting company) |                        |

----

| PART I   -   FINANCIAL INFORMATION |
|------------------------------------------------------------------|
|                                                             |
|                                                             | ITEM 1 - FINANCIAL STATEMENTS |
|                                                             |   |
|                                                             |   | Condensed Balance Sheets as of May 28, 2011 (unaudited) and November 30, 2010 |
|                                                             |   | Condensed Statements of Operations for the three and six months ended May 28, 2011 and  May 29, 2010 (unaudited) |
|                                                             |   | Condensed Statements of Cash Flows for the six months ended May 28, 2011 and May 29, 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 - RESERVED |
|                                                             | ITEM 5 - OTHER INFORMATION |
|                                                             | ITEM 6 - EXHIBITS |
|                                                             |   |
|                                                             |   |
| SIGNATURES                                                       |

----

| ASSETS                                                                                                                                                                                                                                                                                           |   |        |   |   |     |   |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------|--------|--------|----------|--------|
|                                                                                                                                                                                                                                                                                             |   | (Unaudited) |   |   |     |   |
| CURRENT ASSETS                                                                                                                                                                                                                                                                                   |   | 05/28/11    |   |   | 11/30/10 |   |
|                                                                                                                                                                                                                                                                                             |   |        |   |   |     |   |
| Cash and cash equivalents                                                                                                                                                                                                                                                                        |   | $           | 8,337  |   |     | $      | 9,085 |   |
| Short-term investment                                                                                                                                                                                                                                                                            |   |        | 2,000  |   |     |   | 1,000 |   |
| Accounts receivable                                                                                                                                                                                                                                                                              |   |        | 1,960  |   |     |   | 2,893 |   |
| Inventories:                                                                                                                                                                                                                                                                                     |   |        |   |   |     |   |   |   |
| Raw materials                                                                                                                                                                                                                                                                                    |   |        | 2,795  |   |     |   | 2,302 |   |
| Work-in process                                                                                                                                                                                                                                                                                  |   |        | 2,321  |   |     |   | 2,819 |   |
| Total inventories                                                                                                                                                                                                                                                                                |   |        | 5,116  |   |     |   | 5,121 |   |
| Prepaid expenses and other current assets                                                                                                                                                                                                                                                        |   |        | 231    |   |     |   | 239 |   |
| Deferred income tax                                                                                                                                                                                                                                                                              |   |        | 913    |   |     |   | 913 |   |
|                              Total current assets                                                                                               |   |        | 18,557 |   |     |   | 19,251 |   |
|                                                                                                                                                                                                                                                                                             |   |        |   |   |     |   |   |   |
| PROPERTY, PLANT AND EQUIPMENT, at cost:                                                                                                                                                                                                                                                          |   |        |   |   |     |   |   |   |
| Land                                                                                                                                                                                                                                                                                             |   |        | 80     |   |     |   | 80 |   |
| Buildings                                                                                                                                                                                                                                                                                        |   |        | 498    |   |     |   | 498 |   |
| Facility improvements                                                                                                                                                                                                                                                                            |   |        | 1,059  |   |     |   | 882 |   |
| Machinery and equipment                                                                                                                                                                                                                                                                          |   |        | 7,401  |   |     |   | 6,936 |   |
| Furniture and fixtures                                                                                                                                                                                                                                                                           |   |        | 672    |   |     |   | 632 |   |
|                       Total property, plant, and equipment                                                                                                                         |   |        | 9,710  |   |     |   | 9,028 |   |
| Less accumulated depreciation                                                                                                                                                                                                                                                                    |   |        | (7,730 | )      |     |   | (7,582 | ) |
|                                      Net property, plant, and equipment                                 |   |        | 1,980  |   |     |   | 1,446 |   |
|                                                                                                                                                                                                                                                                                             |   |        |   |   |     |   |   |   |
|                                       Total assets                                                 |   | $           | 20,537 |   |     | $      | 20,697 |   |
|                                                                                                                                                                                                                                                                                             |   |        |   |   |     |   |   |   |
| LIABILITIES AND SHAREHOLDERS’ EQUITY                                                                                                                                                                                                                                                       |   |        |   |   |     |   |   |   |
|                                                                                                                                                                                                                                                                                             |   |        |   |   |     |   |   |   |
| CURRENT LIABILITIES:                                                                                                                                                                                                                                                                             |   |        |   |   |     |   |   |   |
| Accounts payable                                                                                                                                                                                                                                                                                 |   | $           | 787    |   |     | $      | 700 |   |
| Accrued compensation                                                                                                                                                                                                                                                                             |   |        | 525    |   |     |   | 766 |   |
| Other accrued liabilities                                                                                                                                                                                                                                                                        |   |        | 445    |   |     |   | 573 |   |
| Deferred revenue                                                                                                                                                                                                                                                                                 |   |        | 158    |   |     |   | 834 |   |
| Income taxes payable                                                                                                                                                                                                                                                                             |   |        | 11     |   |     |   | 75 |   |
|                         Total current liabilities                                                                                                                        |   |        | 1,926  |   |     |   | 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 May 28, 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                                                                                                                                                                                                                                                                                |   |        | 18,391 |   |     |   | 17,529 |   |
|                                                                                                                                                                                                                                                                                             |   |        |   |   |     |   |   |   |
|                                 Total shareholders’ equity                                                                 |   |        | 18,334 |   |     |   | 17,472 |   |
|                                                                                                                                                                                                                                                                                             |   |        |   |   |     |   |   |   |
|                                         Total liabilities and shareholders’ equity |   | $           | 20,537 |   |     | $      | 20,697 |   |

----

|                                                                                                                                                                                                                                            |   | For the three months ended |      |    | For the six months ended |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|----------------------------|-----------|---------|--------------------------|
|                                                                                                                                                                                                                                            |   | 05/28/11                   |      |    | 05/29/10                 |   |   | 05/28/11 |   |   | 05/29/10 |
|                                                                                                                                                                                                                                            |   |                       |      |    |                     |   |   |   |   |   |   |
|                                                                                                                                                                                                                                            |   |                       |      |    |                     |   |   |   |   |   |   |
| NET SALES                                                                                                                                                                                                                                       |   | $                          | 5,437     |    |                     | $ | 5,788 |   |   | $ | 11,027 |   |   | $ | 10,364 |   |
|                                                                                                                                                                                                                                            |   |                       |      |    |                     |   |   |   |   |   |   |   |   |   |   |   |
| COST AND EXPENSES:                                                                                                                                                                                                                              |   |                       |      |    |                     |   |   |   |   |   |   |   |   |   |   |   |
|                                                                                                                                                                                                                                            |   |                       |      |    |                     |   |   |   |   |   |   |   |   |   |   |   |
|     Cost of goods sold                                                                                                                                                                                                      |   |                       | (3,529    | )  |                     |   | (3,611 | ) |   |   | (6,931 | ) |   |   | (6,435 | ) |
|                                                                                                                                                                                                                                            |   |                       |      |    |                     |   |   |   |   |   |   |   |   |   |   |   |
|     Research and development                                                                                                                                                                                                |   |                       | (246      | )  |                     |   | (116 | ) |   |   | (395 | ) |   |   | (263 | ) |
|                                                                                                                                                                                                                                            |   |                       |      |    |                     |   |   |   |   |   |   |   |   |   |   |   |
|     Selling, general & administrative expenses                                                                                                                                                                          |   |                       | (978      | )  |                     |   | (1,011 | ) |   |   | (1,958 | ) |   |   | (1,939 | ) |
|                                                                                                                                                                                                                                            |   |                       |      |    |                     |   |   |   |   |   |   |   |   |   |   |   |
|                                     Total cost and expenses |   |                       | (4,753    | )  |                     |   | (4,738 | ) |   |   | (9,284 | ) |   |   | (8,637 | ) |
|                                                                                                                                                                                                                                            |   |                       |      |    |                     |   |   |   |   |   |   |   |   |   |   |   |
| OPERATING INCOME BEFORE INTEREST           AND INCOME TAXES                                                                                                                              |   |                       | 684       |    |                     |   | 1,050 |   |   |   | 1,743 |   |   |   | 1,727 |   |
|                                                                                                                                                                                                                                            |   |                       |      |    |                     |   |   |   |   |   |   |   |   |   |   |   |
|     Interest and other income                                                                                                                                                                                               |   |                       | 7         |    |                     |   | 7 |   |   |   | 7 |   |   |   | 88 |   |
|                                                                                                                                                                                                                                            |   |                       |      |    |                     |   |   |   |   |   |   |   |   |   |   |   |
| INCOME BEFORE TAXES                                                                                                                                                                                                                             |   | $                          | 691       |    |                     | $ | 1,057 |   |   | $ | 1,750 |   |   | $ | 1,815 |   |
|                                                                                                                                                                                                                                            |   |                       |      |    |                     |   |   |   |   |   |   |   |   |   |   |   |
|     Provision for taxes                                                                                                                                                                                                     |   |                       | (249      | )  |                     |   | (380 | ) |   |   | (630 | ) |   |   | (653 | ) |
|                                                                                                                                                                                                                                            |   |                       |      |    |                     |   |   |   |   |   |   |   |   |   |   |   |
| NET INCOME                                                                                                                                                                                                                                      |   | $                          | 442       |    |                     | $ | 677 |   |   | $ | 1,120 |   |   | $ | 1,162 |   |
| NET INCOME PER SHARE, BASIC AND DILUTED                                                                                                                                                                                                         |   | $                          | .17       |    |                     | $ | .26 |   |   | $ | .43 |   |   | $ | .45 |   |
|                                                                                                                                                                                                                                            |   |                       |      |    |                     |   |   |   |   |   |   |   |   |   |   |   |
| DIVIDENDS PER SHARE                                                                                                                                                                                                                             |   | $                          | 0         |    |                     | $ | 0 |   |   | $ | .10 |   |   | $ | .10 |   |
|                                                                                                                                                                                                                                            |   |                       |      |    |                     |   |   |   |   |   |   |   |   |   |   |   |
| WEIGHTED AVERAGE OF SHARES, Basic and diluted                                                                                                                                                                                                   |   |                       | 2,578,315 |    |                     |   | 2,578,315 |   |   |   | 2,578,315 |   |   |   | 2,578,315 |   |
|                                                                                                                                                                                                                                            |   |                       |      |    |                     |   |   |   |   |   |   |   |   |   |   |   |

----

|                                                                                                                                                                                                                                                      |   | For the six months ended |      |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------------------------|-----------|
|                                                                                                                                                                                                                                                      |   | 5/28/11                  |      |   | 5/29/10 |   |
| CASH FLOWS FROM OPERATING ACTIVITIES:                                                                                                                                                                                                                     |   |                     |      |   |   |   |
| Net income                                                                                                                                                                                                                                                |   | $                        | 1,120     |   |   | $ | 1,162 |   |
| Adjustments to reconcile net income to                                                                                                                                                                                                                    |   |                     |      |   |   |   |   |   |
| net cash provided by (used in) operating activities:                                                                                                                                                                                                      |   |                     |      |   |   |   |   |   |
|     Depreciation and amortization                                                                                                                                                                                                     |   |                     | 148       |   |   |   | 129 |   |
| Changes in certain current assets and liabilities                                                                                                                                                                                                         |   |                     |      |   |   |   |   |   |
| (Increase)decrease in accounts receivable                                                                                                                                                                                                                 |   |                     | 933       |   |   |   | (522 | ) |
| (Increase)decrease in inventories                                                                                                                                                                                                                         |   |                     | 5         |   |   |   | (258 | ) |
| (Increase)decrease in prepaid expense and other current assets                                                                                                                                                                                            |   |                     | 8         |   |   |   | (99 | ) |
| Decrease in deferred revenue                                                                                                                                                                                                                              |   |                     | (676      | ) |   |   | (732 | ) |
| Increasein accounts payable                                                                                                                                                                                                                               |   |                     | 87        |   |   |   | 14 |   |
| Decrease in accrued compensation                                                                                                                                                                                                                          |   |                     | (241      | ) |   |   | (5 | ) |
| Decrease in other accrued liabilities                                                                                                                                                                                                                     |   |                     | (128      | ) |   |   | (55 | ) |
| Increase (decrease) in income taxes payable                                                                                                                                                                                                               |   |                     | (64       | ) |   |   | 309 |   |
|                                                                                                                                                                                                                                                      |   |                     |      |   |   |   |   |   |
|                                  Net cash provided by (used in) operating activities |   |                     | 1,192     |   |   |   | (57 | ) |
|                                                                                                                                                                                                                                                      |   |                     |      |   |   |   |   |   |
| CASH FLOWS FROM INVESTING ACTIVITIES:                                                                                                                                                                                                                     |   |                     |      |   |   |   |   |   |
|         Purchase of short term investments                                                                                                                                                                        |   |                     | (1,000    | ) |   |   | - |   |
|         Additions to property, plant and equipment                                                                                                                                                                |   |                     | (682      | ) |   |   | (269 | ) |
|                                                                                                                                                                                                                                                      |   |                     |      |   |   |   |   |   |
|                          Net cash used in investing activities                                                               |   |                     | (1,682    | ) |   |   | (269 | ) |
|                                                                                                                                                                                                                                                      |   |                     |      |   |   |   |   |   |
| CASH FLOWS FROM FINANCING ACTIVITIES                                                                                                                                                                                                                      |   |                     |      |   |   |   |   |   |
|          Cash dividend                                                                                                                                                                                       |   |                     | (258      | ) |   |   | (258 | ) |
|                                                                                                                                                                                                                                                      |   |                     |      |   |   |   |   |   |
|                                   Net cash used in financing activities         |   |                     | (258      | ) |   |   | (258 | ) |
|                                                                                                                                                                                                                                                      |   |                     |      |   |   |   |   |   |
| Net change in cash and cash equivalents                                                                                                                                                                                                                   |   |                     | (748      | ) |   |   | (584 | ) |
|                                                                                                                                                                                                                                                      |   |                     |      |   |   |   |   |   |
| Cash and cash equivalents at beginning of period                                                                                                                                                                                                          |   |                     | 9,085     |   |   |   | 6,802 |   |
|                                                                                                                                                                                                                                                      |   |                     |      |   |   |   |   |   |
| Cash and cash equivalents at end of period                                                                                                                                                                                                                |   | $                        | 8,337     |   |   | $ | 6,218 |   |
|                                                                                                                                                                                                                                                      |   |                     |      |   |   |   |   |   |
| Supplemental Cash Flow Disclosure:                                                                                                                                                                                                                        |   |                     |      |   |   |   |   |   |
|                                                                                                                                                                                                                                                      |   |                     |      |   |   |   |   |   |
|            Cash paid for income taxes                                                                                                                                                    |   | $                   |  694 |   |   | $  |  342 |   |

----

----

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

----

----

|                                                                                                                                                                                                                                            |   | Three months ended |   |   | Six months ended |   |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------------------|--------|--------|------------------|--------|
|                                                                                                                                                                                                                                            |   | 5/28/2011          |   |   | 5/29/2010        |   |   | 5/28/2011 |   |   | 5/29/2010 |   |
| NET SALES                                                                                                                                                                                                                                       |   |               | 100.0  | %      |             |   | 100.0 | % |   |   | 100.0 | % |   |   | 100.0 | % |
|                                                                                                                                                                                                                                            |   |               |   |   |             |   |   |   |   |   |   |   |   |   |   |   |
| COST AND EXPENSES:                                                                                                                                                                                                                              |   |               |   |   |             |   |   |   |   |   |   |   |   |   |   |   |
|     Cost of Goods Sold                                                                                                                                                                                                      |   |               | 64.9   | %      |             |   | 62.4 | % |   |   | 62.9 | % |   |   | 62.1 | % |
|     Research and development                                                                                                                                                                                                |   |               | 4.5    | %      |             |   | 2.0 | % |   |   | 3.5 | % |   |   | 2.5 | % |
|     Selling, general & administrative expenses                                                                                                                                                                          |   |               | 18.0   | %      |             |   | 17.5 | % |   |   | 17.8 | % |   |   | 18.7 | % |
|                                     Total cost and expenses |   |               | 87.4   | %      |             |   | 81.9 | % |   |   | 84.2 | % |   |   | 83.3 | % |
|                                                                                                                                                                                                                                            |   |               |   |   |             |   |   |   |   |   |   |   |   |   |   |   |
| OPERATING INCOME BEFORE INTEREST                                                                                                                                                                                                                |   |               | 12.6   | %      |             |   | 18.1 | % |   |   | 15.8 | % |   |   | 16.7 | % |
|            AND INCOME TAXES                                                                                                                                                              |   |               |   |   |             |   |   |   |   |   |   |   |   |   |   |   |
|                                                                                                                                                                                                                                            |   |               |   |   |             |   |   |   |   |   |   |   |   |   |   |   |
|     Interest income                                                                                                                                                                                                         |   |               | .1     | %      |             |   | .2 | % |   |   | .1 | % |   |   | .8 | % |
|                                                                                                                                                                                                                                            |   |               |   |   |             |   |   |   |   |   |   |   |   |   |   |   |
| INCOME BEFORE TAXES                                                                                                                                                                                                                             |   |               | 12.7   | %      |             |   | 18.3 | % |   |   | 15.9 | % |   |   | 17.5 | % |
|                                                                                                                                                                                                                                            |   |               |   |   |             |   |   |   |   |   |   |   |   |   |   |   |
|     Provision for taxes                                                                                                                                                                                                     |   |               | 4.6    | %      |             |   | 6.6 | % |   |   | 5.7 | % |   |   | 6.3 | % |
|                                                                                                                                                                                                                                            |   |               |   |   |             |   |   |   |   |   |   |   |   |   |   |   |
| NET INCOME                                                                                                                                                                                                                                      |   |               | 8.1    | %      |             |   | 11.7 | % |   |   | 10.2 | % |   |   | 11.2 | % |

----

----

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

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

----

| 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. |
|   |                                                                                                                                                  |

|   | 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 duly authorized. |
|--------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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

----