<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FINANCIAL
STATEMENTS FOR THE THREE MONTHS ENDED JUNE 30, 2000 AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> MAR-31-2001
<PERIOD-START> APR-01-2000
<PERIOD-END> JUN-30-2000
<CASH> 42,489
<SECURITIES> 0
<RECEIVABLES> 7,594
<ALLOWANCES> 230
<INVENTORY> 5,192
<CURRENT-ASSETS> 58,796
<PP&E> 18,705
<DEPRECIATION> 7,341
<TOTAL-ASSETS> 73,278
<CURRENT-LIABILITIES> 5,466
<BONDS> 0
0
0
<COMMON> 72,740
<OTHER-SE> (5,381)
<TOTAL-LIABILITY-AND-EQUITY> 73,278
<SALES> 12,812
<TOTAL-REVENUES> 12,812
<CGS> 4,354
<TOTAL-COSTS> 4,354
<OTHER-EXPENSES> 7,237
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> 1,735
<INCOME-TAX> 170
<INCOME-CONTINUING> 1,565
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 1,565
<EPS-BASIC> .08
<EPS-DILUTED> .08
</TABLE>