<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM 1997 AND
1998 FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               MAR-31-1998
<CASH>                                          49,008
<SECURITIES>                                     4,999
<RECEIVABLES>                                   35,466
<ALLOWANCES>                                         0
<INVENTORY>                                     49,347
<CURRENT-ASSETS>                               149,851
<PP&E>                                          32,776
<DEPRECIATION>                                  13,505
<TOTAL-ASSETS>                                 171,491
<CURRENT-LIABILITIES>                           35,086
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         9,705
<OTHER-SE>                                     125,325
<TOTAL-LIABILITY-AND-EQUITY>                   171,491
<SALES>                                         56,691
<TOTAL-REVENUES>                                56,691
<CGS>                                           33,367
<TOTAL-COSTS>                                   33,367
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 12,516
<INCOME-TAX>                                     4,300
<INCOME-CONTINUING>                              8,216
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     8,216
<EPS-PRIMARY>                                      .85
<EPS-DILUTED>                                      .82