<ARTICLE>                                           5
<LEGEND>
     (Replace this text with legend, if applicable)
</LEGEND>
<MULTIPLIER>                                                     1000
<CURRENCY>                                          U.S. Dollar

                                                   
<PERIOD-TYPE>                                       Year
<FISCAL-YEAR-END>                                   Dec-31-1999
<PERIOD-START>                                      Jan-01-1999
<PERIOD-END>                                        Dec-31-1999
<EXCHANGE-RATE>                                                     1
<CASH>                                                         45,309
<SECURITIES>                                                   83,525
<RECEIVABLES>                                                  62,422
<ALLOWANCES>                                                    4,143
<INVENTORY>                                                    26,161
<CURRENT-ASSETS>                                              231,029
<PP&E>                                                        117,614
<DEPRECIATION>                                                 47,843
<TOTAL-ASSETS>                                                318,753
<CURRENT-LIABILITIES>                                          57,268
<BONDS>                                                             0
<PREFERRED-MANDATORY>                                               0
<PREFERRED>                                                         0
<COMMON>                                                          500
<OTHER-SE>                                                    253,735
<TOTAL-LIABILITY-AND-EQUITY>                                  318,753
<SALES>                                                       329,583
<TOTAL-REVENUES>                                              329,583
<CGS>                                                          76,040
<TOTAL-COSTS>                                                  76,040
<OTHER-EXPENSES>                                              190,675
<LOSS-PROVISION>                                                    0
<INTEREST-EXPENSE>                                                404
<INCOME-PRETAX>                                                67,353
<INCOME-TAX>                                                   21,553
<INCOME-CONTINUING>                                            45,800
<DISCONTINUED>                                                      0
<EXTRAORDINARY>                                                     0
<CHANGES>                                                        (552)
<NET-INCOME>                                                   45,248
<EPS-BASIC>                                                    0.91
<EPS-DILUTED>                                                    0.87