<ARTICLE>                     5
<MULTIPLIER>                                   1000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                              DEC-31-1997
<PERIOD-END>                                   SEP-26-1997
<CASH>                                         32,172
<SECURITIES>                                   3,423
<RECEIVABLES>                                  24,209
<ALLOWANCES>                                   (196)
<INVENTORY>                                    14,159
<CURRENT-ASSETS>                               77,032
<PP&E>                                         32,694
<DEPRECIATION>                                 (21,181)
<TOTAL-ASSETS>                                 96,417
<CURRENT-LIABILITIES>                          18,776
<BONDS>                                        0
<PREFERRED-MANDATORY>                          0
<PREFERRED>                                    0
<COMMON>                                       22,169
<OTHER-SE>                                     55,472
<TOTAL-LIABILITY-AND-EQUITY>                   96,417
<SALES>                                        116,356
<TOTAL-REVENUES>                               116,356
<CGS>                                          60,957
<TOTAL-COSTS>                                  31,069
<OTHER-EXPENSES>                               (2,493)
<LOSS-PROVISION>                               0
<INTEREST-EXPENSE>                             0
<INCOME-PRETAX>                                26,823
<INCOME-TAX>                                   8,318
<INCOME-CONTINUING>                            18,505
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                                   18,505
<EPS-PRIMARY>                                  0.84
<EPS-DILUTED>                                  0.83