| 摘要 |
PROBLEM TO BE SOLVED: To increase a switching means, without adding a switch or an operation knob and to improve space efficiency by providing a control means for deciding individual pressing or simultaneous pressing of a switch according to a switching signal. SOLUTION: A switch is operated by an operation knob and composed of a first switch 11 and a second switch 12. When the first and second switches 11, 12 are pressed, switching signals (a), (b) as on-signals are output. A control means 2 is constituted of a CPU for calculating a control processing program, an ROM for storing a control program and a set value, an RAM for temporarily storing the switching signals (a), (b) from respective switches 11, 12, and an input/output interface. The control means 2 receives the switching signals (a), (b) from respective switches 11, 12, the discriminates whether the switches are individually pressed or are switched simultaneously, and outputs a corresponding signal to a display 3.
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