| 摘要 |
PURPOSE:To select the mode into the selecting state being preceding interrupting state at the application of power supply, by giving a selecting signal inputted to a control circuit to a switching circuit via a channel selection circuit. CONSTITUTION:A selecting switch 15 is operated and the selection signal corresponding to the content of operation is transmitted to a control circuit 10. The selection signal is kept at a holding means 16 until the other selection signal is inputted. Further, one output corresponding to the selection signal among a plurality of outputs controlled with the selection signal at a switching circuit 11 is inputted to a device. In this case, the selection signal inputted to the control circuit 10 is given to the circuit 11 via a channel selection circuit 9. As a result, since the selecting state when the power supply is interrupted is stored, the trouble for the operation of the selection switch at each application of the power supply is avoided. |
