<ARTICLE> 5
       
                                                  
<PERIOD-TYPE>                   3-MOS                   3-MOS
<FISCAL-YEAR-END>                           DEC-31-1997            DEC-31-1998
<PERIOD-END>                                MAR-31-1997            MAR-31-1998
<CASH>                                      15,766,000              11,981,000
<SECURITIES>                                         0                       0
<RECEIVABLES>                                3,606,000               4,122,000
<ALLOWANCES>                                    54,000                  76,000
<INVENTORY>                                  2,098,000               2,463,000
<CURRENT-ASSETS>                            22,042,000              18,864,000
<PP&E>                                       5,930,000               6,366,000
<DEPRECIATION>                               1,913,000               2,333,000
<TOTAL-ASSETS>                              30,413,000              27,155,000
<CURRENT-LIABILITIES>                        6,370,000               5,994,000
<BONDS>                                      1,244,000               1,106,000
<COMMON>                                     1,606,000               1,655,000
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<OTHER-SE>                                  10,248,000               8,834,000
<TOTAL-LIABILITY-AND-EQUITY>                30,413,000              27,155,000
<SALES>                                      5,828,000               6,623,000
<TOTAL-REVENUES>                             5,828,000               6,623,000
<CGS>                                        4,134,000               4,500,000
<TOTAL-COSTS>                                2,242,000               2,126,000
<OTHER-EXPENSES>                               302,000                 (15,000)
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                             108,000                  90,000
<INCOME-PRETAX>                               (958,000)                (78,000)
<INCOME-TAX>                                         0                       0
<INCOME-CONTINUING>                           (958,000)                (78,000)
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                  (958,000)                (78,000)
<EPS-PRIMARY>                                     (.06)                   (.01)
<EPS-DILUTED>                                     (.06)                   (.01)