<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
UNAUDITED CONSOLIDATED BALANCE SHEETS AND CONSOLIDATED STATEMENTS OF INCOME AND
IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   6-MOS                   3-MOS
<FISCAL-YEAR-END>                          JUL-31-1997             JUL-31-1997
<PERIOD-START>                             AUG-01-1996             NOV-01-1996
<PERIOD-END>                               JAN-31-1997             JAN-31-1997
<CASH>                                           6,390                   6,390
<SECURITIES>                                         0                       0
<RECEIVABLES>                                   11,641                  11,641
<ALLOWANCES>                                       510                     510
<INVENTORY>                                      9,037                   9,037
<CURRENT-ASSETS>                                29,566                  29,566
<PP&E>                                           6,036                   6,036
<DEPRECIATION>                                   3,677                   3,677
<TOTAL-ASSETS>                                  49,472                  49,472
<CURRENT-LIABILITIES>                            5,231                   5,231
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                             9                       9
<OTHER-SE>                                      44,204                  44,204
<TOTAL-LIABILITY-AND-EQUITY>                    49,472                  49,472
<SALES>                                         26,121                  13,844
<TOTAL-REVENUES>                                26,121                  13,844
<CGS>                                           21,812                  11,605
<TOTAL-COSTS>                                   21,812                  11,605
<OTHER-EXPENSES>                                 5,765                   2,931
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                  23                      19
<INCOME-PRETAX>                                (1,033)                   (513)
<INCOME-TAX>                                     (503)                   (244)
<INCOME-CONTINUING>                              (530)                   (269)
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                     (530)                   (269)
<EPS-PRIMARY>                                   (0.09)                  (0.04)
<EPS-DILUTED>                                   (0.09)                  (0.04)
        

</TABLE>