<ARTICLE> 5
<LEGEND>
This  schedule  contains  summary  financial   information  extracted  from  the
financial statements of the Company for the six-month period ended June 30, 1997
and is qualified in its entirety by reference to such financial statements.
</LEGEND>

       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                           4,045
<SECURITIES>                                    21,771
<RECEIVABLES>                                    6,901
<ALLOWANCES>                                       478
<INVENTORY>                                      6,479
<CURRENT-ASSETS>                                42,710
<PP&E>                                           8,692
<DEPRECIATION>                                   6,116
<TOTAL-ASSETS>                                  65,408
<CURRENT-LIABILITIES>                           10,004
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        31,105     
<OTHER-SE>                                      24,299
<TOTAL-LIABILITY-AND-EQUITY>                    65,408
<SALES>                                         33,071
<TOTAL-REVENUES>                                33,071
<CGS>                                           13,672
<TOTAL-COSTS>                                   29,982
<OTHER-EXPENSES>                               (1,278)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                  4,367
<INCOME-TAX>                                     1,331
<INCOME-CONTINUING>                              3,036
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     3,036
<EPS-PRIMARY>                                     0.33
<EPS-DILUTED>                                     0.32