| 摘要 |
PURPOSE:To reduce the power consumption of a control circuit and to reduce the cost of a firing circuit by periodically firing intermittently a plurality of indicators in response to a control signal from a memory. CONSTITUTION:A ternary counter 4 is set and reset by a power synchronizing pulse from a power synchronizing pulse generator 1 to count the clock pulse from the generator 1. A pulse output having 1/3 duty which is sequentially displaced at 1/3 period is outputted from the output terminal of the counted value of the counter 4, light emitting diodes LED1-LED6 are energized in a time division manner and sequentially become capable of being energized intermittently at 1/3 period. A memory 3 varies the output state of the output terminal for controlling the indicators in response to the stored content, thereby intermittently firing the diodes LED1-LED6. |
