<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY INFORMATION EXTRACTED FROM SEC FORM 10Q AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   3-MOS                   9-MOS                   9-MOS
<FISCAL-YEAR-END>                          JUN-28-1997             JUN-30-1996             JUN-28-1997             JUN-30-1996
<PERIOD-END>                               MAR-29-1997             MAR-30-1996             MAR-29-1997             MAR-30-1996
<CASH>                                           1,989                   2,172                   1,989                   2,172
<SECURITIES>                                         0                       0                       0                       0
<RECEIVABLES>                                    7,690                   7,665                   7,690                   7,665
<ALLOWANCES>                                       173                     289                     173                     289
<INVENTORY>                                      6,265                   5,330                   6,265                   5,330
<CURRENT-ASSETS>                                17,540                  16,700                  17,540                  16,700
<PP&E>                                           6,531                   4,448                   6,531                   4,448
<DEPRECIATION>                                   4,066                   3,559                   4,066                   3,559
<TOTAL-ASSETS>                                  21,574                  18,227                  21,574                  18,227
<CURRENT-LIABILITIES>                            9,858                   8,665                   9,858                   8,665
<BONDS>                                              0                       0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0                       0
<PREFERRED>                                          0                       0                       0                       0
<COMMON>                                            54                      55                      54                      55
<OTHER-SE>                                      11,278                   9,099                  11,278                   9,099
<TOTAL-LIABILITY-AND-EQUITY>                    18,227                  18,227                  21,574                  18,227
<SALES>                                          8,790                   7,487                  25,835                  21,356
<TOTAL-REVENUES>                                 8,827                   7,504                  25,903                  21,422
<CGS>                                            4,112                   4,174                  12,747                  12,026
<TOTAL-COSTS>                                    4,112                   4,174                  12,747                  12,026
<OTHER-EXPENSES>                                 4,547                   3,021                  11,177                   8,461
<LOSS-PROVISION>                                     0                       0                       0                       0
<INTEREST-EXPENSE>                                  35                       8                      67                      28
<INCOME-PRETAX>                                    133                     301                   1,912                     907
<INCOME-TAX>                                     (170)                      70                     364                     320
<INCOME-CONTINUING>                                303                     231                   1,548                     587
<DISCONTINUED>                                       0                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0                       0
<CHANGES>                                            0                       0                       0                       0
<NET-INCOME>                                       303                     231                   1,548                     587
<EPS-PRIMARY>                                     0.05                    0.04                    0.27                    0.11
<EPS-DILUTED>                                     0.05                    0.04                    0.27                    0.10
        

</TABLE>