The Computer Integrated Manufacturing System includes a plurality of levels of computer control which organize and disseminate the information for controlling shop floor level systems. Both scheduling data and data relating to process, product, and material specifications as well as bills of material are generated in an upper level computer system and refined and down loaded as needed to lower level computers controlling the shop floor processes. The computers on the upper levels are capable of communication with the computers on the lower levels and computers on the same level are capable of communication with each other as needed to pass information back and forth.