<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED CONSOLIDATED FINANCIAL STATEMENTS INCLUDED IN THE COMPANY'S FORM 10-Q
FOR THE PERIOD ENDED OCTOBER 31, 2000 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> APR-30-2001
<PERIOD-START> MAY-01-2000
<PERIOD-END> OCT-31-2000
<CASH> 46,049
<SECURITIES> 68,666
<RECEIVABLES> 16,642
<ALLOWANCES> (1,135)
<INVENTORY> 7,520
<CURRENT-ASSETS> 139,055
<PP&E> 10,161
<DEPRECIATION> (2,028)
<TOTAL-ASSETS> 300,812
<CURRENT-LIABILITIES> 22,307
<BONDS> 0
0
0
<COMMON> 4
<OTHER-SE> 277,875
<TOTAL-LIABILITY-AND-EQUITY> 300,812
<SALES> 54,993
<TOTAL-REVENUES> 54,993
<CGS> 20,191
<TOTAL-COSTS> 46,150
<OTHER-EXPENSES> 43,146
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> (3,713)
<INCOME-PRETAX> (50,781)
<INCOME-TAX> 169
<INCOME-CONTINUING> (50,950)
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (50,950)
<EPS-BASIC> (1.52)
<EPS-DILUTED> (1.52)
</TABLE>