| 摘要 |
PURPOSE:To enable continuous processing in case of failed computer, by providing a plurality of computer systems depending on functions and by constituting the system so that the computers are coupled each other and the information exchange is made with the constituting unit and process. CONSTITUTION:Exclusive control electronic computer systems C,D are provided with each of a plurality plants, and the information managing computer system E which is connected to the systems C,D and is made possible for back up mutually, is provided. The systems C,D are provided with CPU1C,1D, external memory units 2C,2D, process input and output control units 3C,3D, peripheral units 4C, 4D, selectors 6C,6D, and interrupt reception circuits 8C,8D. The system E is provided with CPU1E coupled with the data linkage circuits 9 to 12 between the systems C,E, a plurality of and different objective external memory units 2E,2E', and peripheral unit 4E, allowing to couple the data transmission and reception with the systems C,D, and E. |
