<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET AND CONSOLIDATED STATEMENT OF OPERATIONS AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED>
<MULTIPLIER> 1,000

<S>                             <C>                     <C>                     <C>                     <C>
<C>
<PERIOD-TYPE>                   YEAR                   3-MOS                   6-MOS                   9-MOS
YEAR
<FISCAL-YEAR-END>                          DEC-31-1995             DEC-31-1996             DEC-31-1996             DEC-31-1996
             DEC-31-1996
<PERIOD-START>                             JAN-01-1995             JAN-01-1996             JAN-01-1996             JAN-01-1996
             JAN-01-1996
<PERIOD-END>                               DEC-31-1995             MAR-31-1996             JUN-30-1996             SEP-30-1996
             DEC-31-1996
<CASH>                                             867                     504                     489                     353
                     899
<SECURITIES>                                     1,200                   1,402                   1,223                   1,284
                     940
<RECEIVABLES>                                    2,306                   2,407                   2,631                   2,808
                   2,879<F1>
<ALLOWANCES>                                         0                       0                       0                       0
                       0
<INVENTORY>                                      3,519                   1,924                   1,981                   2,390
                   1,907
<CURRENT-ASSETS>                                 8,354                   6,440                   6,553                   7,407
                   7,060
<PP&E>                                             445                     403                     423                     453
                     476<F1>
<DEPRECIATION>                                       0                       0                       0                       0
                       0
<TOTAL-ASSETS>                                   9,739                   7,926                   8,054                   8,946
                   8,620
<CURRENT-LIABILITIES>                            6,675                   4,731                   5,699                   6,667
                   6,910
<BONDS>                                              0                       0                       0                       0
                       0
<PREFERRED-MANDATORY>                              185                     185                     163                     163
                     198
<PREFERRED>                                          0                       0                       0                       0
                       0
<COMMON>                                             0                       0                       0                       0
                       0
<OTHER-SE>                                       2,238                   2,385                   1,991                   1,996
                   1,214
<TOTAL-LIABILITY-AND-EQUITY>                     9,739                   7,926                   8,054                   8,946
                   8,620
<SALES>                                         42,136                   8,628                  17,260                  26,514
                  37,387
<TOTAL-REVENUES>                                42,136                   8,628                  17,260                  26,514
                  37,387
<CGS>                                           38,852                   7,615                  15,359                  23,588
                  33,476
<TOTAL-COSTS>                                   38,852                   7,615                  15,359                  23,588
                  33,476
<OTHER-EXPENSES>                                 4,796                   1,170                   2,305                   3,437
                   4,760
<LOSS-PROVISION>                                   285                      30                      60                     105
                     340
<INTEREST-EXPENSE>                                 198                       3                       4                      23
                      43
<INCOME-PRETAX>                                (1,652)                   (144)                   (355)                   (397)
                   (616)
<INCOME-TAX>                                         0                       0                       0                       0
                       0
<INCOME-CONTINUING>                                  0                       0                       0                       0
                       0
<DISCONTINUED>                                       0                       0                       0                       0
                       0
<EXTRAORDINARY>                                      0                       0                       0                       0
                       0
<CHANGES>                                            0                       0                       0                       0
                       0
<NET-INCOME>                                   (1,652)                   (144)                   (355)                   (397)
                   (616)
<EPS-PRIMARY>                                    (.19)                   (.01)                   (.03)                   (.04)
                   (.06)
<EPS-DILUTED>                                    (.19)                   (.01)                   (.03)                   (.04)
                   (.06)
<FN>
<F1>AMOUNTS REPORTED FOR ACCOUNTS RECEIVABLE AND PROPERTY, PLANT, AND EQUIPMENT ARE
NET AMOUNTS.
</FN>


</TABLE>