<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS AS OF AND FOR THE THREE
MONTH PERIOD ENDED MARCH 31, 1997 AND IS QUALIFIED IN IS ENTIRETY BY REFERENCE
TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               MAR-31-1997
<CASH>                                       8,211,000
<SECURITIES>                                 3,054,000
<RECEIVABLES>                                3,475,000
<ALLOWANCES>                                   327,000
<INVENTORY>                                  3,361,000
<CURRENT-ASSETS>                            19,204,000
<PP&E>                                       2,856,000
<DEPRECIATION>                               2,250,000
<TOTAL-ASSETS>                              20,742,000
<CURRENT-LIABILITIES>                        1,925,000
<BONDS>                                          3,000
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                    484,000
<COMMON>                                    35,460,000
<OTHER-SE>                                 (17,127,000)
<TOTAL-LIABILITY-AND-EQUITY>                20,742,000
<SALES>                                      4,725,000
<TOTAL-REVENUES>                             4,725,000
<CGS>                                        1,269,000
<TOTAL-COSTS>                                1,303,000
<OTHER-EXPENSES>                             3,298,000
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                            (135,000)
<INCOME-PRETAX>                                      0
<INCOME-TAX>                                   259,000
<INCOME-CONTINUING>                            259,000
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   259,000
<EPS-PRIMARY>                                      .04
<EPS-DILUTED>                                      .04