| 摘要 |
PURPOSE:To display time-elapsed states of >=3 timers with one display device, by flickering a display device with the output of an oscillation circuit with the lapse of timer time. CONSTITUTION:An output of an oscillator 1 is counted at a counter 2 and the output is sent to an output circuit 3 when the count value reaches a given value to obtain a timer output signal from an output circuit 3. On the other hand, the display function is added by providing an oscillator 11, an OR circuit 12 and a display output circuit 13. The display output circuit 13 is distinguished before the application of the power supply and it flickers in the oscillating frequency of the oscillator 11 during the timer time and illuminates after the lapse of timer time, allowing to display three states. A counter counting the output of the oscillator 11 and a multiplexer are provided and the operating state within the set time can be displayed by selecting the output applied to the display output circuit 13 according to the information on the way of counting of the counter 2. |
