<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   6-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997             DEC-31-1997
<PERIOD-START>                             JAN-01-1997             APR-01-1997             JUL-01-1997
<PERIOD-END>                               MAR-31-1997             JUN-30-1997             SEP-30-1997
<CASH>                                           1,895                   2,091                     397
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                   21,046                  13,315                  13,917
<ALLOWANCES>                                     2,114                   2,185                   2,221
<INVENTORY>                                     19,113                  19,951                  20,094
<CURRENT-ASSETS>                                45,403                  37,926                  38,530
<PP&E>                                           8,420                  10,799                  11,610
<DEPRECIATION>                                   1,426                   1,669                   2,018
<TOTAL-ASSETS>                                  53,809                  48,400                  49,375
<CURRENT-LIABILITIES>                           11,973                   6,592                  12,447
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                            15                      15                      15
<OTHER-SE>                                      40,618                  40,663                  35,858
<TOTAL-LIABILITY-AND-EQUITY>                    53,809                  48,400                  49,375
<SALES>                                         24,016                  17,611                  16,450
<TOTAL-REVENUES>                                25,441                  18,794                  17,075
<CGS>                                           16,931                  11,698                  17,026
<TOTAL-COSTS>                                   16,931                  11,698                  17,026
<OTHER-EXPENSES>                                 9,380                   7,005                   7,972
<LOSS-PROVISION>                                   113                      22                     (5)
<INTEREST-EXPENSE>                                (40)                      16                      85
<INCOME-PRETAX>                                  (830)                      75                 (8,008)
<INCOME-TAX>                                     (332)                      30                 (3,203)
<INCOME-CONTINUING>                              (830)                      75                 (8,008)
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                     (498)                      45                 (4,805)
<EPS-PRIMARY>                                   (0.03)                    0.00                  (0.32)
<EPS-DILUTED>                                   (0.03)                    0.00                  (0.32)
        

</TABLE>