Abstract: The production of semiconductor devices manufactured through a plurality of manufacturing sites is unitarily managed and an appropriate production plan is instructed. A computer projects a production plan of an entire company based on various information. The production plan is provided to each manufacturing site as a production instruction and provided to each business person or customer as a storing reply or an order accepting period reply. If the projected production plan (possible production volume) does not coincide with a production plan (necessary production volume), parameters obtained by correcting production allocation, production capability, lead time, yield and the like are re-input from a parameter input terminal. Based on the corrected parameters, the computer re-projects the production plan and projects an optimum production plan.

Abstract: The production of semiconductor devices manufactured through a plurality of manufacturing sites is unitarily managed and an appropriate production plan is instructed. A computer projects a production plan of an entire company based on various information. The production plan is provided to each manufacturing site as a production instruction and provided to each business person or customer as a storing reply or an order accepting period reply. If the projected production plan (possible production volume) does not coincide with a production plan (necessary production volume), parameters obtained by correcting production allocation, production capability, lead time, yield and the like are re-input from a parameter input terminal. Based on the corrected parameters, the computer re-projects the production plan and projects an optimum production plan.

Abstract: Facilitating the unifying of management of information on a plurality of manufacture entrusted companies without development cost for a new system, in the case of consigning the manufacture to a plurality of manufacture entrusted companies. An information provision system comprising: a database for unifying management of production progress information on a plurality of manufacturers; a storage processing means for storing, into the database, the production progress information on the plurality of manufacturers transmitted based on a common specification; and a display data creation processing means for extracting necessary information from information managed in the database, in response to a request from a manufacture consignment source, and for creating display data, wherein the display data is transmitted to a terminal of the manufacture consignment source and is displayed thereon.

Abstract: The production of semiconductor devices manufactured through a plurality of manufacturing sites is unitarily managed and an appropriate production plan is instructed. A computer projects a production plan of an entire company from necessary information such as a planning and finishing volume and a day's schedule of each of the manufacturing sites, each item and each process for satisfying a demand estimation of a product, order information on the product, and a product volume required to be manufactured which information are collected from a customer computer and a production management computer and the like. The production plan is provided to each manufacturing site as a production instruction and provided to each business person or customer as a storing reply or an order accepting period reply.

Abstract: The production of semiconductor devices manufactured through a plurality of manufacturing sites is unitarily managed and an appropriate production plan is instructed. A computer projects a production plan of an entire company from necessary information such as a planning and finishing volume and a day's schedule of each of the manufacturing sites, each item and each process for satisfying a demand estimation of a product, order information on the product, and a product volume required to be manufactured which information are collected from a customer computer and a production management computer and the like. The production plan is provided to each manufacturing site as a production instruction and provided to each business person or customer as a storing reply or an order accepting period reply.