| 摘要 |
PURPOSE:To make it possible to automatically perform the sound information of an indicated time at a definite time, by forcibly outputting a signal to a sound signal circuit regardless of the manipulation state of a mode selecting switch at a definite time having to automatically perform the sound information of the indicated time. CONSTITUTION:The minute time of a minute counter 8 and the memory content of a set time minute memory 12 are supplied to a multiplexer 30 and the hour time of an hour counter 10 and the memory content of a set time hour memory 10 are similarily supplied to a multiplexer 32. Both multiplexers 30, 32 perform the selection of either one of an indicated time and a set time to supply the same to a digital multiplexer 34. This selection is performed by a mode selecting circuit 40 connected to an externally manipulatable mode selecting switch 16 through said mode selecting switch 36 and a chattering preventing circuit 38. The mode selecting circuit 40 is one for forcibly selecting an indicated time mode when the sound information of the indicated time is performed at a correct time. By this mechanism, the sound information at a definite time can be automatically performed. |
