<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
UNAUDITED CONSOLIDATED BALANCE SHEETS AND STATEMENTS OF OPERATIONS AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> JUL-31-2000
<PERIOD-START> AUG-01-1999
<PERIOD-END> APR-30-2000
<CASH> 5,892
<SECURITIES> 9,784
<RECEIVABLES> 11,328
<ALLOWANCES> 434
<INVENTORY> 9,641
<CURRENT-ASSETS> 37,449
<PP&E> 5,049
<DEPRECIATION> 4,771
<TOTAL-ASSETS> 41,837
<CURRENT-LIABILITIES> 9,322
<BONDS> 912
0
0
<COMMON> 9
<OTHER-SE> 31,594
<TOTAL-LIABILITY-AND-EQUITY> 41,837
<SALES> 37,553
<TOTAL-REVENUES> 37,553
<CGS> 29,210
<TOTAL-COSTS> 29,210
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> 194
<INCOME-TAX> 0
<INCOME-CONTINUING> 194
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 194
<EPS-BASIC> 0.04
<EPS-DILUTED> 0.04
</TABLE>