<ARTICLE>    5
<MULTIPLIER> 1,000

       
                                                
<PERIOD-TYPE>                                            3-MOS
<FISCAL-YEAR-END>                                  DEC-31-1998
<PERIOD-START>                                     JAN-01-1998
<PERIOD-END>                                       MAR-31-1998
<CASH>                                                   5,922
<SECURITIES>                                            17,632
<RECEIVABLES>                                            3,139
<ALLOWANCES>                                                 0
<INVENTORY>                                              2,390
<CURRENT-ASSETS>                                        29,604
<PP&E>                                                  11,176
<DEPRECIATION>                                           4,800
<TOTAL-ASSETS>                                          36,095
<CURRENT-LIABILITIES>                                    3,405
<BONDS>                                                      0
<PREFERRED-MANDATORY>                                        0
<PREFERRED>                                                  0
<COMMON>                                                   299
<OTHER-SE>                                             111,736
<TOTAL-LIABILITY-AND-EQUITY>                            32,443
<SALES>                                                  3,163
<TOTAL-REVENUES>                                         4,560
<CGS>                                                    1,726
<TOTAL-COSTS>                                            1,726
<OTHER-EXPENSES>                                             0
<LOSS-PROVISION>                                             0
<INTEREST-EXPENSE>                                           0
<INCOME-PRETAX>                                         (3,300)
<INCOME-TAX>                                                 0
<INCOME-CONTINUING>                                     (3,300)
<DISCONTINUED>                                               0
<EXTRAORDINARY>                                              0
<CHANGES>                                                    0
<NET-INCOME>                                            (3,300)
<EPS-PRIMARY>                                             (.10)
<EPS-DILUTED>                                             (.10)