<ARTICLE>      5 

<LEGEND>    THE SCHEDULE CONTAINS RESTATED SUMMARY FINANCIAL INFORMATION 
            EXTRACTED FROM THE CONSOLIDATED FINANCIAL  STATEMENTS FOR
            THE PERIODS ENDED SEPTEMBER 30, 1998 AND DECEMBER 31,1998,
            AND ARE QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
            STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000 
       
                                              
<PERIOD-TYPE>                         3-MOS         6-MOS
<FISCAL-YEAR-END>                     JUN-30-1999   JUN-30-1999
<PERIOD-START>                        JUL-01-1998   JUL-01-1998
<PERIOD-END>                          SEP-30-1998   DEC-31-1998
<CASH>                                     31,479        29,331
<SECURITIES>                               75,627        84,905
<RECEIVABLES>                              40,716        40,791
<ALLOWANCES>                                  684           871
<INVENTORY>                                24,207        26,180
<CURRENT-ASSETS>                          179,384       189,555
<PP&E>                                     87,159        94,646
<DEPRECIATION>                             21,913        21,913
<TOTAL-ASSETS>                            352,949       367,275
<CURRENT-LIABILITIES>                      42,194        46,163
<BONDS>                                         0             0
<PREFERRED-MANDATORY>                           0             0
<PREFERRED>                                     0             0
<COMMON>                                       39            40
<OTHER-SE>                                304,211       314,006
<TOTAL-LIABILITY-AND-EQUITY>              352,949       367,275
<SALES>                                    57,420       121,192
<TOTAL-REVENUES>                           57,420       121,192
<CGS>                                      28,898        62,436
<TOTAL-COSTS>                              28,898        62,436
<OTHER-EXPENSES>                           16,618        41,072
<LOSS-PROVISION>                                0             0
<INTEREST-EXPENSE>                              0             0
<INCOME-PRETAX>                            12,823        19,447
<INCOME-TAX>                                4,675         8,898
<INCOME-CONTINUING>                         8,148        10,549
<DISCONTINUED>                                  0             0
<EXTRAORDINARY>                                 0             0
<CHANGES>                                       0             0
<NET-INCOME>                                8,148        10,549
<EPS-PRIMARY>                               $0.21         $0.27
<EPS-DILUTED>                               $0.19         $0.25