| 摘要 |
PURPOSE:To enable to enlarge function of a main computer, by a method wherein a microcomputer which can be obtained at comparatively low cost and having a little ROM capacity is made to take partial charge of a part of control and connected with a main microcomputer. CONSTITUTION:A control program of a subordinate microcomputer 8 reads input signals of its own operating keys 5 and applies an application signal for action to a main microcomputer 7, in control of a high-frequency heating device. The main microcomputer 7 rings a buzzer 12 by taking-in the signal under a state wherein one of the operation keys has been applied and carries out only work sending back an approved signal of the action to the subordinate microcomputer 8. The subordinate microcomputer 8 cannot carry out its own control till the signal is applied to the same. As for the two microcomputers, it becomes possible to perform transmission with two signal lines. |
