<ARTICLE> 5
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                          22,602
<SECURITIES>                                     5,157
<RECEIVABLES>                                    5,256
<ALLOWANCES>                                       652
<INVENTORY>                                        440
<CURRENT-ASSETS>                                33,972
<PP&E>                                           3,896
<DEPRECIATION>                                   2,060
<TOTAL-ASSETS>                                  39,158
<CURRENT-LIABILITIES>                            4,667
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            67
<OTHER-SE>                                      34,424
<TOTAL-LIABILITY-AND-EQUITY>                    39,158
<SALES>                                         12,905
<TOTAL-REVENUES>                                12,905
<CGS>                                            1,747
<TOTAL-COSTS>                                   12,965
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                   135
<INTEREST-EXPENSE>                                   4
<INCOME-PRETAX>                                    698
<INCOME-TAX>                                       244
<INCOME-CONTINUING>                                454
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       454
<EPS-PRIMARY>                                      .07
<EPS-DILUTED>                                      .07