<ARTICLE> 5
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               MAR-31-1997
<CASH>                                           3,263
<SECURITIES>                                       337
<RECEIVABLES>                                    1,321
<ALLOWANCES>                                       150
<INVENTORY>                                        774
<CURRENT-ASSETS>                                 5,569
<PP&E>                                           3,009
<DEPRECIATION>                                   2,586
<TOTAL-ASSETS>                                   6,140
<CURRENT-LIABILITIES>                            1,950
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        31,117
<OTHER-SE>                                    (27,338)
<TOTAL-LIABILITY-AND-EQUITY>                     6,140
<SALES>                                            676
<TOTAL-REVENUES>                                   725
<CGS>                                              240
<TOTAL-COSTS>                                      240
<OTHER-EXPENSES>                                   771
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                (17)
<INCOME-PRETAX>                                  (278)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                              (278)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     (278)
<EPS-PRIMARY>                                    (.04)
<EPS-DILUTED>                                    (.04)