| 摘要 |
PURPOSE:To attain synchronization of operation processing of each CPU, by providing an information transmitting means for transmitting and receiving the information between each computer group. CONSTITUTION:A CPU CA transmits a command signal C1 at every constant period. When the signal C1 is received through a bus E, a CPU CB starts a program, and also sends back a response signal R1 to the CPU CA. The CPU CA also executes the external data input processing immediately after receiving the signal R1, therefore, the external data input timing can be made to coincide by transmission and reception of the signals C1, R1. By using this same input data, each CPU executes the operation processing, and the CPU CA transmits a command signal C2 through the bus E again when the operation processing has ended. The CPU CB trasmits a response signal R2 when the operation processing has ended, and informs the operation end to the CPU CA. The CPU CB executes the data output processing after sending the signal R2, and the CPU CA executes the data output processing immediately after receiving the signal R2. Accordingly, the same data whose operating synchronization has been taken are outputted to the outside. |
