| 摘要 |
PURPOSE:To perform the integrated control of various actuating devices by executing a main interrupt control program periodically and alternately using a microcomputer and switching and displaying the operating switching information attached to a liquid crystal panel on the liquid crystal panel through interrupt processing. CONSTITUTION:When an ignition switch 40 is turned on, a microcomputer 30 is operated and executes a main control program. At the same time, the interrupt timer of the CPU starts time measurement and an air conditioner 20, a radio 10, and the like are controlled based on the contents of a RAM. In the meantime, an interrupt program is repeatedly executed every 4msec. by the interrupt timer. If power feed switches 121 and 122, a display selection switch 123, and each of operating switches 126 to 129 are actuated, the CPU applies scanning signals CD0 to CD5 to an operator panel 120 and the signals of the operating switches are stored on the RAM. When the interrupt timer comes, interrupt processing and switching display 100 are performed. As a result, the integrated control of various actuating devices is made possible. |
