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<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> NOV-30-2000
<PERIOD-END> MAY-31-2000
<CASH> 295,669
<SECURITIES> 0
<RECEIVABLES> 417,825
<ALLOWANCES> 5,000
<INVENTORY> 142,156
<CURRENT-ASSETS> 874,596
<PP&E> 549,496
<DEPRECIATION> 414,359
<TOTAL-ASSETS> 1,265,583
<CURRENT-LIABILITIES> 440,685
<BONDS> 336,423
0
0
<COMMON> 8,479,854
<OTHER-SE> 95,000
<TOTAL-LIABILITY-AND-EQUITY> 1,265,583
<SALES> 906,703
<TOTAL-REVENUES> 906,703
<CGS> 306,302
<TOTAL-COSTS> 741,624
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 14,510
<INCOME-PRETAX> 162,347
<INCOME-TAX> 1,600
<INCOME-CONTINUING> 160,747
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 160,747
<EPS-BASIC> .08
<EPS-DILUTED> .07
</TABLE>
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