专利名称:SEQUENCE OPERATION CONTROLLER 发明人:IGUCHI MORIKAZU万能作文开头
申请号:JP22192984
动态表情制作申请日:19841024少年宫的英文
盐步职业技术学校美术教师述职报告公开号:JPS61101804A
公开日:
画女孩
19860520
专利内容由知识产权出版社提供
传统教育
记得87摘要:PURPOSE:To prevent intermission or stop of a plant control by providing a memory lection circuit to a memory, tting the address of the memory from a CPU in a way of the software and using other memory even if one memory is faulty. CONSTITUTION:The CPU 1 us a control bus 7 to t to an address to each register 20 of memories 2a, 2b at the same time and a write data is written through a data bus 6. At readout, the CPU 1 outpus an address data in 8-bit comprising a high-order 2-bit designating the memory 2a and a low-order 6-bit designating a memory location in the memory 2a to an address bus 5. Then the high-order 2-bit is compared with a data stored in the register 20 by a comparator 21, and when they are coincident, the low-order bit is inputted to a decode circuit, resulting that a prescribed data is read from the memory 2a, and an error detection ction 3 detects an error. As a result, when no error is found out, the memory 2a is ud and when an error exists, the CPU 1 changes data read from the memory 2a into the memory 2b.
申请人:TOSHIBA CORP
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