| 摘要 |
<p>PURPOSE:To prevent the competition of access requests, to increase the contents of an information processing, and to shorten a processing time by providing respectively required terminals to respective microcomputers and transmitting and receiving the access requests to a common memory between the computers. CONSTITUTION:For respective microcomputers 2-1-2-3 connected to a common memory 30 through a bus 32, first terminals and second terminals, 21-1-21-3 and 23-1-23-3, are respectively provided. Thereafter, for example, when a computer 2-1 accesses the memory 30, a terminal 21-1 is retrieved, it is retrieved whether the other computers 2-2 and 2-3 access the memory 30 or not, and when the computers 2-2 and 2-3 do not access the memory 30, an access request is outputted from the terminal 21-1, and the access of the memory 30 is executed with the computer 2-1. The generation of the competition of the access requests can be prevented, the contents of the information processing can be increased, and the processing time can be shortened by this extending system.</p> |
