| 摘要 |
PURPOSE:To increase the lifetime of a battery, by usually performing no display of function and displaying the function for a certain time only when a switch is operated. CONSTITUTION:At a switch part 19, the outputs corresponding to ''1'', ''2'' and ''3'' are delivered to lines (b), (c) and (d) respectively through a switch circuit that varies its state of connection in accordance with the output of a control circuit 18 and in case an input (display permission signal) is applied to a line (a). Display segments 20, 21 and 22 have a display in accordance with the output of a counter 18 and via the switch 19, and have a sound producer 13, a display device 15 and a vibrator 17 in an opposite way to each other. When a switch 23 is closed, a control circuit 24 transmits the signal to the counter 18 and advances the counter 18 by one if the output of a timer 25 having a rise is supplied. When the counter 18 shows ''1'', a segment 20 glows for a certain time decided by the timer 25. |
