<ARTICLE> 5
<MULTIPLIER> 1,000
       
                                                  
<PERIOD-TYPE>                   12-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1997
<PERIOD-START>                             JAN-01-1996             JAN-01-1997
<PERIOD-END>                               DEC-31-1996             JUN-30-1997
<CASH>                                           4,781                   3,850
<SECURITIES>                                    11,418                   8,504
<RECEIVABLES>                                    5,164                   4,287
<ALLOWANCES>                                       265                     265
<INVENTORY>                                        809                     997
<CURRENT-ASSETS>                                22,241                  17,725
<PP&E>                                           1,236                   1,466
<DEPRECIATION>                                     423                     543
<TOTAL-ASSETS>                                  24,009                  19,725
<CURRENT-LIABILITIES>                            2,611                   2,469
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                             7                       8
<OTHER-SE>                                      21,391                  17,248
<TOTAL-LIABILITY-AND-EQUITY>                    24,009                  19,725
<SALES>                                         13,605                   3,334
<TOTAL-REVENUES>                                13,605                   3,334
<CGS>                                           12,002                   3,889
<TOTAL-COSTS>                                   12,002                   3,889
<OTHER-EXPENSES>                                 6,916                   4,052
<LOSS-PROVISION>                                   190                      65
<INTEREST-EXPENSE>                                 500                     397
<INCOME-PRETAX>                                 (4,813)                 (4,210)
<INCOME-TAX>                                       (63)                    (33)
<INCOME-CONTINUING>                             (4,876)                 (4,243)
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    (4,876)                 (4,243)
<EPS-PRIMARY>                                    (0.73)                  (0.57)
<EPS-DILUTED>                                    (0.73)                  (0.57)<FN>

<FN>
Per share information in 1996 has been retroactively adjusted to reflect a one
for three reverse stock split that was approved in May, 1996.
</FN>