<TABLE> <S> <C>

<ARTICLE>                    5
<LEGEND>
This  Exhibit  contains  summary  financial   information   extracted  from  the
Registrant's financial statements for the periods ended March 31, 1997, June 30,
1997, and  September 30,  1997,  as restated  pursuant to Statement of Finanical
Standards  No. 128.  This  Exhibit is  qualified in its entirety by reference to
such financial  statements.  This Exhibit shall not be deemed filed for purposes
of Section 11 of the  Securities  Act of 1933 and  Section 18 of the  Securities
Exchange Act of 1934, or otherwise  subject to the  liability of such  Sections,
nor shall it be deemed a part of any other filing which incorporates this report
by reference,  unless such other filing expressly  incorporates  this Exhibit by
reference.
</LEGEND>
<MULTIPLIER>                 1,000
<CURRENCY>                   U.S. DOLLARS
       
<S>                            <C>                          <C>                               <C>                    
<PERIOD-TYPE>                  6-MOS                        9-MOS                             12-MOS                 
<FISCAL-YEAR-END>                         SEP-30-1997                     SEP-30-1997                    SEP-30-1997 
<PERIOD-START>                            OCT-01-1996                     OCT-01-1996                    OCT-01-1996 
<PERIOD-END>                              MAR-31-1997                     JUN-30-1997                    SEP-30-1997 
<EXCHANGE-RATE>                                     1                               1                              1 
<CASH>                                          2,979                          49,275                         29,318 
<SECURITIES>                                        0                               0                              0 
<RECEIVABLES>                                  12,860                          16,631                         18,639 
<ALLOWANCES>                                      895                             936                            837 
<INVENTORY>                                    13,810                          15,450                         17,855 
<CURRENT-ASSETS>                               34,457                          87,914                         72,545 
<PP&E>                                         17,235                          18,917                         26,548 
<DEPRECIATION>                                  4,784                           5,559                          6,531 
<TOTAL-ASSETS>                                 81,519                         135,538                        141,325 
<CURRENT-LIABILITIES>                          15,254                          25,839                         15,570 
<BONDS>                                        22,305                          22,048                         22,586 
<PREFERRED-MANDATORY>                               0                               0                              0 
<PREFERRED>                                         0                               0                              0 
<COMMON>                                          137                             155                            160 
<OTHER-SE>                                     31,939                          74,513                         84,984 
<TOTAL-LIABILITY-AND-EQUITY>                   81,519                         135,538                        141,325 
<SALES>                                        43,478                          83,109                        130,380 
<TOTAL-REVENUES>                               43,478                          83,109                        130,380 
<CGS>                                          26,302                          51,249                         80,995 
<TOTAL-COSTS>                                  26,302                          51,249                         80,995 
<OTHER-EXPENSES>                                9,750                          22,085                         31,250 
<LOSS-PROVISION>                                    0                               0                              0 
<INTEREST-EXPENSE>                                916                           1,269                          2,021 
<INCOME-PRETAX>                                 6,675                           8,505                         16,910 
<INCOME-TAX>                                    2,670                           3,402                          6,764 
<INCOME-CONTINUING>                             4,005                           5,103                         10,146 
<DISCONTINUED>                                      0                               0                              0 
<EXTRAORDINARY>                                     0                               0                              0 
<CHANGES>                                           0                               0                              0 
<NET-INCOME>                                    4,005                           5,103                         10,146 
<EPS-PRIMARY>                                    0.30                            0.38                           0.72 
<EPS-DILUTED>                                    0.29                            0.36                           0.69 
        

</TABLE>