<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FORM 10Q FOR
QUARTER ENDING NOVEMBER 30, 2000 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE
TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<S> <C> <C>
<PERIOD-TYPE> 3-MOS 9-MOS
<FISCAL-YEAR-END> FEB-28-2001 FEB-28-2001
<PERIOD-START> SEP-01-2000 MAR-01-2000
<PERIOD-END> NOV-30-2000 NOV-30-2000
<CASH> 8,942,129 0
<SECURITIES> 0 0
<RECEIVABLES> 14,875,042 0
<ALLOWANCES> 634,402 0
<INVENTORY> 4,871,232 0
<CURRENT-ASSETS> 30,204,211 0
<PP&E> 33,641,947 0
<DEPRECIATION> 23,079,430 0
<TOTAL-ASSETS> 42,192,302 0
<CURRENT-LIABILITIES> 11,171,441 0
<BONDS> 0 0
0 0
0 0
<COMMON> 225,173 0
<OTHER-SE> 25,197,984 0
<TOTAL-LIABILITY-AND-EQUITY> 42,192,302 0
<SALES> 24,226,724 73,592,359
<TOTAL-REVENUES> 24,351,724 74,984,159
<CGS> 12,144,155 35,233,109
<TOTAL-COSTS> 12,144,155 35,233,109
<OTHER-EXPENSES> 9,536,393 27,982,265
<LOSS-PROVISION> 17,063 67,918
<INTEREST-EXPENSE> 80,414 239,577
<INCOME-PRETAX> 2,873,662 12,173,493
<INCOME-TAX> 1,121,000 4,748,000
<INCOME-CONTINUING> 1,752,662 7,425,493
<DISCONTINUED> 0 0
<EXTRAORDINARY> 0 0
<CHANGES> 0 0
<NET-INCOME> 1,752,662 7,425,493
<EPS-BASIC> .11 .46
<EPS-DILUTED> .11 .44
</TABLE>