Abstract
In 1979, a multi-processor process computer system using a data way was installed at the No. 3 steelmaking plant of Yawata Works, Nippon Steel Corporation. The system includes five central processing units (CPUs), a common core memory unit, eight fixed-head disk units and peripherals in a single computer room. Ten remote stations including four intelligent stations are connected to the CPUs through a data way. Process input-output units and man-machine interface units are connected mainly to the remote stations. This paper presents a review of the system mainly from the viewpoint of the systems structural technology by comparing it with a conventional system for an existing steel plant. A discussion is made of the benefits and problems in relation to the requirements for high availability, simple data management, small initial cost, easy testing, expandability, etc.
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