| 摘要 |
PURPOSE:To enable sound information in accordance with an indicated time, by sensing the generation of figure-up in a figure-up detecting circuit when a time information switch is manipulated during a period generating the figure-up of a second signal within an information time to add +1 to a counter. CONSTITUTION:A figure-up detecting circuit 62 and a pulse generating circuit 64 are provided and, because an information time is 5 second, the detecting circuit 62 detects that the figure-up of a second signal to a minute is generated within the information switch is manipulated during this time, the pulse generating circuit 64 generates one pulse to add +1 to the counter in a memory circuit. The pulse generating circuit 64 consists of an AND gate 72 and a delay circuit 74 and the output of the delay circuit 74 is supplied to the clock input CL1 of the counter in the memory circuit. As the result, accurate information in accordance with a one minute added inficated time can be obtained. |
