| 摘要 |
PURPOSE:To process plural programs in parallel without using a monitor program, by forming plural interrupting levels a line clock signal from a commercial power supply. CONSTITUTION:An interruption controller 3 switches to a 1/5 or a 1/6 frequency division circuit via a switch 4 depending on the power supply frequency of 50Hz or 60Hz. Further, two interruption signals having a different level are inputted to a microcomputer 7 in response to each clock. The computer 7 is incorporated with the 1st interruption program, the 2nd interruption program and a background program. Further, the programming is done from the 1st interruption program having a high interruption level and then the 2nd interruption program is executed. The repetition of the program depends on the number of set channels and the clock frequency. |
