| 摘要 |
PURPOSE:To save the useless time of a microcomputer and obtain many useful functions from the microcomputer by switching the microcomputer to an internal information processing mode at the time when the microcomputer has outputted all phase controlling pulses. CONSTITUTION:An electric power source synchronizing signal outputted from an electric power source synchronizing signal generating circuit 1 is inputted to a microcomputer 2 to execute phase control processing and respective phase controlling element 4 corresponding to the number of circuits are respectively triggered by phase controlling pulses outputted from the microcomputer 2. These phase controlling pulses outputted from the microcomputer 2 are counted by a total counter 3 and, whn the counted value by the counter 3 coincides with the number of the whole phase controlling pulses outputted from the microcomputer 2, the output of the counter 3 is inputted to the microcomputer 2 to switch the microcomputer 2 to an internal information processing mode and operate the processing independently of the ''H'' level of the electric power source synchronizing signal. |
