| 摘要 |
PURPOSE:To reduce the size and thickness of an electronic watch, etc., by obtaining the same input with at least >=2 switches in accordance with the way of operating one switch. CONSTITUTION:A signal from a switch 1 is inputted to an AND gate 5 and a monostable multivibrator 8 through a differentiating circuit 3, and the output of the multivibrator 8 is inputted to the AND gate 5. The output of this gate 5 is inputted to the set terminal of an FF6, which is reset when the switch 1 is operated only once during a constant period. This FF6 generates a level ''1'' when its terminal Q is set or a ''0'' when reset, and those outputs are inputted to AND gates 11 and 12. The output of the monostable multivibrator 8, on the other hand, is inputted to the gates 11 and 12 through an inverter 15. Similarly, the output of a monostable multivibrator 9 is triggered at the fall of the multivibrator 8 and inputted to the gates 11 and 12. The output signal of a monostable multivibrator 10 triggered at the fall of the output of this multivibrator 9 is connected to the reset terminal of the FF6 through an OR gate 7. |
