<ARTICLE> 5
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               DEC-31-1999
<CASH>                                          35,952
<SECURITIES>                                    24,815
<RECEIVABLES>                                   48,749
<ALLOWANCES>                                     1,304
<INVENTORY>                                     18,136
<CURRENT-ASSETS>                               137,775
<PP&E>                                          22,652
<DEPRECIATION>                                  12,857
<TOTAL-ASSETS>                                 164,721
<CURRENT-LIABILITIES>                           51,451
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            17
<OTHER-SE>                                     113,253
<TOTAL-LIABILITY-AND-EQUITY>                   164,721
<SALES>                                        200,067
<TOTAL-REVENUES>                               200,067
<CGS>                                           91,257
<TOTAL-COSTS>                                   91,257
<OTHER-EXPENSES>                                65,408<F1>
<LOSS-PROVISION>                                   433
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 42,969
<INCOME-TAX>                                    13,616
<INCOME-CONTINUING>                             29,353
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    29,353
<EPS-BASIC>                                       0.90
<EPS-DILUTED>                                     0.81
<FN>
<F1>INCLUDES 1,650 K OF ACQUISITION COSTS
</FN>