<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM CONDENSED
CONSOLIDATED BALANCE SHEETS AND STATEMENT OF OPERATIONS AND CASH FLOWS AS OF
MARCH 31, 1998 AND MARCH 31, 1997 AND THE THREE MONTHS THEN ENDED AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               MAR-31-1998
<CASH>                                           3,291
<SECURITIES>                                     9,320
<RECEIVABLES>                                      912
<ALLOWANCES>                                        60
<INVENTORY>                                      5,345
<CURRENT-ASSETS>                                30,829
<PP&E>                                          13,403
<DEPRECIATION>                                 (7,187)
<TOTAL-ASSETS>                                  40,955
<CURRENT-LIABILITIES>                            8,628
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        51,894
<OTHER-SE>                                       2,685
<TOTAL-LIABILITY-AND-EQUITY>                    32,317
<SALES>                                          5,272
<TOTAL-REVENUES>                                 5,272
<CGS>                                            3,664
<TOTAL-COSTS>                                    3,664
<OTHER-EXPENSES>                                 6,943
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                (5,171)
<INCOME-TAX>                                        37
<INCOME-CONTINUING>                            (5,208)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (5,208)
<EPS-PRIMARY>                                   (0.41)
<EPS-DILUTED>                                   (0.41)