<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED CONSOLIDATED BALANCE SHEET AS OF MARCH 30, 1997 AND THE CONDENSED
CONSOLIDATED STATEMENT OF INCOME FOR THE THREE MONTHS ENDED MARCH 30, 1997 AND
IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               MAR-30-1997
<CASH>                                      63,441,000
<SECURITIES>                                12,039,000
<RECEIVABLES>                               12,378,000
<ALLOWANCES>                                         0
<INVENTORY>                                  9,687,000
<CURRENT-ASSETS>                            99,625,000
<PP&E>                                      72,984,000
<DEPRECIATION>                              23,583,000
<TOTAL-ASSETS>                             153,852,000
<CURRENT-LIABILITIES>                       23,355,000
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       145,000
<OTHER-SE>                                 129,812,000
<TOTAL-LIABILITY-AND-EQUITY>               153,852,000
<SALES>                                     22,860,000
<TOTAL-REVENUES>                            22,860,000
<CGS>                                       12,321,000
<TOTAL-COSTS>                               12,321,000
<OTHER-EXPENSES>                             6,185,000
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                           (561,000)
<INCOME-PRETAX>                              4,915,000
<INCOME-TAX>                                 1,745,000
<INCOME-CONTINUING>                          3,170,000
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 3,170,000
<EPS-PRIMARY>                                      .24
<EPS-DILUTED>                                      .23