<ARTICLE> 5
<CURRENCY> US DOLLARS
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUL-30-1998
<EXCHANGE-RATE>                                      1
<CASH>                                          29,248
<SECURITIES>                                     4,236
<RECEIVABLES>                                   17,467
<ALLOWANCES>                                     (479)
<INVENTORY>                                      9,469
<CURRENT-ASSETS>                                65,099
<PP&E>                                          24,737
<DEPRECIATION>                                   7,659
<TOTAL-ASSETS>                                 105,821
<CURRENT-LIABILITIES>                           12,629
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                             8
<OTHER-SE>                                      90,383
<TOTAL-LIABILITY-AND-EQUITY>                   105,821
<SALES>                                         51,790
<TOTAL-REVENUES>                                51,790
<CGS>                                           25,453
<TOTAL-COSTS>                                   45,292
<OTHER-EXPENSES>                                 (989)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               (109)
<INCOME-PRETAX>                                  5,984
<INCOME-TAX>                                     3,733
<INCOME-CONTINUING>                              2,251
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     2,251
<EPS-PRIMARY>                                     0.29
<EPS-DILUTED>                                     0.28