<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROMTHE
CONSOLIDATED BALANCCE SHEET AND THE CONSOLIDATED STATEMENT OF OPERATION AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.

<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-END>                               JUN-30-2000
<CASH>                                          16,594
<SECURITIES>                                    85,196
<RECEIVABLES>                                   35,175
<ALLOWANCES>                                         0
<INVENTORY>                                      9,882
<CURRENT-ASSETS>                               152,234
<PP&E>                                          43,210
<DEPRECIATION>                                  20,968
<TOTAL-ASSETS>                                 182,640
<CURRENT-LIABILITIES>                           22,254
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           544
<OTHER-SE>                                     155,361
<TOTAL-LIABILITY-AND-EQUITY>                   182,640
<SALES>                                         26,589
<TOTAL-REVENUES>                                42,030
<CGS>                                            4,247
<TOTAL-COSTS>                                   31,396
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  47
<INCOME-PRETAX>                                 10,587
<INCOME-TAX>                                     3,639
<INCOME-CONTINUING>                              6,948
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     6,948
<EPS-BASIC>                                        .13
<EPS-DILUTED>                                      .12