<ARTICLE>                     5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET AND THE CONSOLIDATED STATMENT OF OPERATIONS AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER>              1,000
       
                                
<PERIOD-TYPE>                      6-MOS
<FISCAL-YEAR-END>                                  DEC-31-1997
<PERIOD-END>                                       JUN-30-1997
<CASH>                                                  13,305
<SECURITIES>                                            17,268
<RECEIVABLES>                                           21,707
<ALLOWANCES>                                                 0
<INVENTORY>                                              4,040
<CURRENT-ASSETS>                                        60,210
<PP&E>                                                   6,916
<DEPRECIATION>                                               0
<TOTAL-ASSETS>                                          84,897
<CURRENT-LIABILITIES>                                    7,922
<BONDS>                                                    260
<PREFERRED-MANDATORY>                                        0
<PREFERRED>                                                  0
<COMMON>                                                   470
<OTHER-SE>                                              72,754
<TOTAL-LIABILITY-AND-EQUITY>                            84,897
<SALES>                                                 28,965
<TOTAL-REVENUES>                                        30,457
<CGS>                                                    4,794
<TOTAL-COSTS>                                           20,260
<OTHER-EXPENSES>                                             0
<LOSS-PROVISION>                                             0
<INTEREST-EXPENSE>                                         165
<INCOME-PRETAX>                                         10,032
<INCOME-TAX>                                             2,723
<INCOME-CONTINUING>                                     10,032
<DISCONTINUED>                                               0
<EXTRAORDINARY>                                              0
<CHANGES>                                                    0
<NET-INCOME>                                             7,309
<EPS-PRIMARY>                                             0.14
<EPS-DILUTED>                                             0.14