<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from financial
statements for the three months ended September 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> JUL-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 33,396
<SECURITIES> 0
<RECEIVABLES> 11,493
<ALLOWANCES> 230
<INVENTORY> 7,126
<CURRENT-ASSETS> 56,641
<PP&E> 19,406
<DEPRECIATION> 7,918
<TOTAL-ASSETS> 73,381
<CURRENT-LIABILITIES> 2,733
<BONDS> 0
0
0
<COMMON> 73,628
<OTHER-SE> (3,398)
<TOTAL-LIABILITY-AND-EQUITY> 73,381
<SALES> 15,040
<TOTAL-REVENUES> 15,040
<CGS> 5,603
<TOTAL-COSTS> 5,603
<OTHER-EXPENSES> 7,970
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> 2,206
<INCOME-TAX> 241
<INCOME-CONTINUING> 1,965
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 1,965
<EPS-BASIC> .10
<EPS-DILUTED> .10
</TABLE>