<ARTICLE> 5
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               MAR-31-1998
<CASH>                                           5,917
<SECURITIES>                                    23,030
<RECEIVABLES>                                   21,225
<ALLOWANCES>                                     1,145
<INVENTORY>                                      2,619
<CURRENT-ASSETS>                                54,062
<PP&E>                                           5,720
<DEPRECIATION>                                       0
<TOTAL-ASSETS>                                  59,934
<CURRENT-LIABILITIES>                           20,070
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            69
<OTHER-SE>                                      39,795
<TOTAL-LIABILITY-AND-EQUITY>                    59,934
<SALES>                                         20,372
<TOTAL-REVENUES>                                20,372
<CGS>                                            7,547
<TOTAL-COSTS>                                    7,547
<OTHER-EXPENSES>                                 9,117
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                  3,981
<INCOME-TAX>                                     1,433
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     2,548
<EPS-PRIMARY>                                      .17
<EPS-DILUTED>                                      .16