<ARTICLE> 5
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               MAR-31-1997
<CASH>                                          25,596
<SECURITIES>                                    12,854
<RECEIVABLES>                                   23,196
<ALLOWANCES>                                     2,713
<INVENTORY>                                     11,237
<CURRENT-ASSETS>                                82,598
<PP&E>                                          25,406
<DEPRECIATION>                                  20,113
<TOTAL-ASSETS>                                  89,857
<CURRENT-LIABILITIES>                           20,936
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        68,608
<OTHER-SE>                                          60
<TOTAL-LIABILITY-AND-EQUITY>                    68,668
<SALES>                                         31,064<F1>
<TOTAL-REVENUES>                                31,064
<CGS>                                           18,061<F2>
<TOTAL-COSTS>                                   18,061
<OTHER-EXPENSES>                                12,250
<LOSS-PROVISION>                                    31
<INTEREST-EXPENSE>                                  22
<INCOME-PRETAX>                                  1,421
<INCOME-TAX>                                       569
<INCOME-CONTINUING>                                852
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       852
<EPS-PRIMARY>                                     0.05
<EPS-DILUTED>                                     0.05
<FN>
<F1>INCLUDES REVENUES FROM LICENSING OF SOFTWARE AND SUPPORT SERVICES.
<F2>INCLUDES COSTS FROM LICENSING OF SOFTWARE AND SUPPORT SERVICES.
</FN>