<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM 1998 AND
1999 FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS
</LEGEND>
<MULTIPLIER> 1000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                          51,339
<SECURITIES>                                    22,864
<RECEIVABLES>                                   43,864
<ALLOWANCES>                                     2,107
<INVENTORY>                                     51,263
<CURRENT-ASSETS>                               181,516
<PP&E>                                          33,863
<DEPRECIATION>                                  16,805
<TOTAL-ASSETS>                                 199,577
<CURRENT-LIABILITIES>                           48,196
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        19,831
<OTHER-SE>                                     130,040
<TOTAL-LIABILITY-AND-EQUITY>                   199,577
<SALES>                                        134,725
<TOTAL-REVENUES>                               134,725
<CGS>                                           81,990
<TOTAL-COSTS>                                   81,990
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 21,143
<INCOME-TAX>                                     7,400
<INCOME-CONTINUING>                             13,743
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    13,743
<EPS-BASIC>                                     0.70<F1>
<EPS-DILUTED>                                     0.67
<FN>
<F1>Item consists of Basic Earnings per Share
</FN>