| 摘要 |
PURPOSE:To facilitate the operation with a reduced number of switches by making a coincidence tone generate when a switch is operated corresponding to the current time among twelve switches and again subsequently when a switch is operated corresponding to the minute in 5min unit of the current time. CONSTITUTION:SA and ST each indicates a selection switch for alarm time and current time, SL a rock switch, SO a alarm sound stop switch and H1-H12 twelve switches provided at the positions of indicating time. For example, when the time is set to 6:42, first a switch H8 is depressed three times following the depression of a switch H6. With the pressing of the switch H6, the output of an encoder E is set at the digit of the time of a counter CT and with the first pressing of the switch H8, it at the digit for 5min. With subsequent two pressings of the switch H8, 2 is set at the digit of one minute. Thus, the setting of the hour, the minute in 5min-unit and one minute can be performed and with the setting action of the switches, signal sounds are generated from an alarm AL to confirm the setting. |
