| 摘要 |
PURPOSE:To make a user recognize that the time is not set, by leaving a lamp turned off in case when plural time setting switchs are not operated at all. CONSTITUTION:When a switch 17 is closed, a signal is inputted to a signal input terminal PA0, a microcomputer 3 outputs a signal for 1 minute, this output is provided to a lamp 15 through a driving circuit 14, and it is lighted. When a switch 18 is closed, the lamp 15 is lighted for 2 minutes by the same operation, and the lamp 15 is lighted for 4 minutes and 8 minutes when a switch 19 is closed, and when a switch 20 is closed, respectively. That is to say, when the switches 17-20 are combined and operated, the operation time of 1-15 minutes can be set. When all the switches 17-20 are turned off, the lamp 15 is not lighted, and the time proves not to be set. |
