<ARTICLE> 5
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                          14,356
<SECURITIES>                                    22,306
<RECEIVABLES>                                   28,043
<ALLOWANCES>                                     2,748
<INVENTORY>                                     10,602
<CURRENT-ASSETS>                                79,931
<PP&E>                                          25,816
<DEPRECIATION>                                  20,948
<TOTAL-ASSETS>                                  86,556
<CURRENT-LIABILITIES>                           19,382
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        66,212
<OTHER-SE>                                         757
<TOTAL-LIABILITY-AND-EQUITY>                    86,556
<SALES>                                         65,426<F1>
<TOTAL-REVENUES>                                65,426
<CGS>                                           38,378<F2>
<TOTAL-COSTS>                                   38,378
<OTHER-EXPENSES>                                25,683
<LOSS-PROVISION>                                    66
<INTEREST-EXPENSE>                                  36
<INCOME-PRETAX>                                  2,582
<INCOME-TAX>                                     1,033
<INCOME-CONTINUING>                              1,549
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     1,549
<EPS-PRIMARY>                                     0.08
<EPS-DILUTED>                                     0.08
<FN>
<F1>Includes revenues from licensing of software and support services.
<F2>Includes costs from licensing of software and support services.
</FN>