<TABLE> <S> <C>

<ARTICLE> 5
<RESTATED>

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   9-MOS                   6-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1997             DEC-31-1997
<PERIOD-START>                             APR-01-1996             JAN-01-1997             JUL-01-1997
<PERIOD-END>                               DEC-31-1996             JUN-30-1997             SEP-30-1997
<CASH>                                         172,764               3,833,945              32,245,196
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                1,740,383               5,117,207               8,318,591
<ALLOWANCES>                                         0                       0                (65,818)
<INVENTORY>                                  2,533,970               5,934,429               7,319,741
<CURRENT-ASSETS>                             4,520,274              15,072,123              47,866,503
<PP&E>                                       5,293,010               8,103,418              11,314,152
<DEPRECIATION>                               2,645,649               3,139,131             (3,491,219)
<TOTAL-ASSETS>                               7,304,865              20,208,148              55,924,045
<CURRENT-LIABILITIES>                        4,809,362              10,701,136               8,248,187
<BONDS>                                        542,259               1,035,274                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                 39,312,836              47,768,859                       0
<COMMON>                                     1,376,715               1,398,231              86,862,176
<OTHER-SE>                                (38,736,307)            (40,695,352)               2,796,487
<TOTAL-LIABILITY-AND-EQUITY>                 7,304,865              20,208,148              55,924,045
<SALES>                                      2,050,245              12,582,457              10,418,475
<TOTAL-REVENUES>                             2,103,502              12,582,457              10,418,475
<CGS>                                        3,685,395               9,569,967               7,012,353
<TOTAL-COSTS>                                3,738,652               9,569,967               7,012,353
<OTHER-EXPENSES>                             5,550,356               5,687,775               3,101,494
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                             249,294                 337,733                 170,255
<INCOME-PRETAX>                            (7,328,836)             (3,012,547)                 389,558
<INCOME-TAX>                                         0                       0                 389,558
<INCOME-CONTINUING>                        (7,328,836)             (3,012,547)                       0
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                               (7,328,836)             (3,012,547)                 389,558
<EPS-PRIMARY>                                   (8.27)                  (3.17)                    0.05
<EPS-DILUTED>                                   (8.27)                  (3.17)                    0.02


</TABLE>