<PAGE>
 
 
                                                                      EXHIBIT 11
                         COMPUTATION OF PER SHARE DATA
                                  (UNAUDITED)
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<CAPTION>
 
                                                                   NINE MONTHS ENDED                THREE MONTHS ENDED
                                                                   -----------------                ------------------
                                                                JUNE 28,      JUNE 29,             JUNE 28,      JUNE 29,
                                                                  1997          1996                 1997          1996
                                                                  ----          ----                 ----          ----
<S>                                                         <C>             <C>                 <C>           <C>
NET (LOSS)                                                   $(13,579,000)   $(3,868,000)        $(3,835,000)  $(2,930,000)
                                                                                              
Primary:                                                                                      
Weighted average number of common                                                             
  common shares outstanding                                    18,677,725     18,232,457          18,678,171    18,338,904
                                                                                              
Shares issuable upon exercise of dilutive stock                                               
  options and warrants - net of shares assumed to                                             
  be repurchased (at the average market price for                                             
  the period) from exercise proceeds                                9,562        220,441                 918       166,449
                                                             ------------    -----------         -----------   -----------
                                                                                              
Shares used for computation                                    18,687,287     18,452,898          18,679,089    18,505,353
                                                             ============    ===========         ===========   ===========
                                                                                              
                                                                                              
NET (LOSS) PER SHARE OF COMMON STOCK                                $(.73)         $(.21)              $(.21)        $(.16)
                                                                    =====          =====               =====         ===== 
                                                                                              
Assuming full dilution:                                                                       
Weighted average number of common shares                                                      
  outstanding                                                  18,677,725     18,232,457          18,678,171    18,338,904
                                                                                              
Shares issuable upon exercise of dilutive stock                                               
  options and warrants - net of shares assumed to be                                          
  repurchased (at the higher of period-end market                                             
  price or the average market price for the period)                                           
  from exercise proceeds                                            9,562        220,441                 918       166,449
                                                             ------------    -----------         -----------   -----------
                                                                                              
Shares used for computation                                    18,687,287     18,452,898          18,679,089    18,505,353
                                                             ============    ===========         ===========   ===========
                                                                                              
NET (LOSS) PER SHARE OF COMMON STOCK                                $(.73)         $(.21)              $(.21)        $(.16)
                                                                    =====          =====               =====         ===== 
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