<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEETS AND CONSOLIDATED STATEMENTS OF OPERATIONS FOUND IN
THE COMPANY'S FORM 10-Q FOR THE YEAR-TO-DATE, AND IS QUALIFIED IN ITS ENTIRETY
BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               SEP-27-1997
<CASH>                                           9,749
<SECURITIES>                                   106,818
<RECEIVABLES>                                   33,172
<ALLOWANCES>                                   (1,329)
<INVENTORY>                                     21,295
<CURRENT-ASSETS>                               171,950
<PP&E>                                          25,630
<DEPRECIATION>                                (13,490)
<TOTAL-ASSETS>                                 188,790
<CURRENT-LIABILITIES>                           21,438
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           243
<OTHER-SE>                                     166,539
<TOTAL-LIABILITY-AND-EQUITY>                   188,790
<SALES>                                        136,437
<TOTAL-REVENUES>                               138,742
<CGS>                                           68,171
<TOTAL-COSTS>                                   69,027
<OTHER-EXPENSES>                                31,917
<LOSS-PROVISION>                                   445
<INTEREST-EXPENSE>                                   9
<INCOME-PRETAX>                                 48,708
<INCOME-TAX>                                    17,591
<INCOME-CONTINUING>                             31,117
<DISCONTINUED>                                 (2,655)
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    28,462
<EPS-PRIMARY>                                     1.17
<EPS-DILUTED>                                     1.17