<ARTICLE> 5
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                          26,072
<SECURITIES>                                    59,732
<RECEIVABLES>                                   21,506
<ALLOWANCES>                                   (1,202)
<INVENTORY>                                      5,886
<CURRENT-ASSETS>                               116,658
<PP&E>                                           8,770
<DEPRECIATION>                                 (4,806)
<TOTAL-ASSETS>                                 124,434
<CURRENT-LIABILITIES>                           24,440
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           155
<OTHER-SE>                                      99,839
<TOTAL-LIABILITY-AND-EQUITY>                   124,434
<SALES>                                         16,995
<TOTAL-REVENUES>                                55,973
<CGS>                                           13,307
<TOTAL-COSTS>                                   13,307
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                   387
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                (7,404)
<INCOME-TAX>                                   (1,037)
<INCOME-CONTINUING>                            (6,367)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (6,367)
<EPS-PRIMARY>                                   (0.42)
<EPS-DILUTED>                                   (0.42)<F1>
<FN>
<F1>For Purposes of This Exhibit, Diluted means Basic.
</FN>