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<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED CONSOLIDATED BALANCE SHEETS AT SEPTEMBER 30, 2000 (UNAUDITED) AND THE
CONDENSED CONSOLIDATED STATEMENTS OF INCOME FOR THE THREE MONTHS AND SIX MONTHS
ENDED SEPTEMBER 30, 2000(UNAUDITED) AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> MAR-31-2001
<PERIOD-START> APR-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 3,118
<SECURITIES> 8,773
<RECEIVABLES> 2,057
<ALLOWANCES> (740)
<INVENTORY> 3,941
<CURRENT-ASSETS> 17,611
<PP&E> 18,264
<DEPRECIATION> (12,907)
<TOTAL-ASSETS> 29,095
<CURRENT-LIABILITIES> 4,244
<BONDS> 0
0
0
<COMMON> 99
<OTHER-SE> 24,752
<TOTAL-LIABILITY-AND-EQUITY> 24,851
<SALES> 10,702
<TOTAL-REVENUES> 10,702
<CGS> 5,886
<TOTAL-COSTS> 5,886
<OTHER-EXPENSES> 3,073
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> 2,005
<INCOME-TAX> (1,089)
<INCOME-CONTINUING> 3,094
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 3,094
<EPS-BASIC> .31
<EPS-DILUTED> .30
</TABLE>
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