<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
FINANCIAL STATEMENTS FOR THE QUARTERLY PERIOD ENDED MARCH 31, 1997 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   8-MOS
<FISCAL-YEAR-END>                          JUN-30-1997             JUN-30-1997
<PERIOD-START>                             JAN-01-1997             AUG-01-1996
<PERIOD-END>                               MAR-31-1997             MAR-31-1997
<CASH>                                          40,982                  40,982
<SECURITIES>                                         0                       0
<RECEIVABLES>                                   18,409                  18,409
<ALLOWANCES>                                     3,729                   3,729
<INVENTORY>                                     12,437                  12,437
<CURRENT-ASSETS>                                72,124                  72,124
<PP&E>                                          24,588                  24,588
<DEPRECIATION>                                  11,172                  11,172
<TOTAL-ASSETS>                                  91,852                  91,852
<CURRENT-LIABILITIES>                           43,030                  43,030
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                        79,925                  79,925
<OTHER-SE>                                    (32,814)                (32,814)
<TOTAL-LIABILITY-AND-EQUITY>                    91,852                  91,852
<SALES>                                         27,044                  67,139
<TOTAL-REVENUES>                                27,044                  67,139
<CGS>                                           11,255                  31,545
<TOTAL-COSTS>                                   11,255                  31,545
<OTHER-EXPENSES>                                11,122                  28,707
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                   0                       0
<INCOME-PRETAX>                                  4,713                   7,827
<INCOME-TAX>                                     1,674                   3,636
<INCOME-CONTINUING>                              3,039                   4,191
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                     3,039                   4,191
<EPS-PRIMARY>                                     0.11                    0.15
<EPS-DILUTED>                                     0.11                    0.15
        

</TABLE>