Integrated Software Systems for IC Manufacturing (Harrison et al 1989)


                                                               customer
         manufacturing                     product             requests 
         orders                            demand              & orders
   WIP  <-------------- IC PRODUCTION <---------------  ORDER  <-------
 SYSTEM                 CONTROL SYSTEM                  ENTRY   
        --------------->              ----------------> SYSTEM ------->
         projected           ^         time available     ^     quote
         supply              |         and updated        |
                             |         (special) prices   |
                         die and                         static
                         final goods                     (standard)
                         inventory                       die prices