| 摘要 |
PURPOSE:To simplify the operation of the push-botton switch by generating one unit of the pulse in case both the operation and reset of one unit of the manual switch are completed within the prescribed time and then generating the pulse signals continuously and with every period in case the operation is continued for the prescribed time or more respectively. CONSTITUTION:In case both the pushing and reset are completed for push-botton swich 1 in period Ta within time td which is decided by the characteristics of one- shot multivibrator circuit 8, FF circuit 5 is set in synchronization with output signal 12 of clock signal generating circuit 4 by the push of switch 1. And output 15 and 16 set FF circuit 6 via next click signal 12, and then one unit of pulse is applied to output 23 through AND circuit 7 and OR circuit 11. The circuit 8 generates trigger output 20 for time td, and subsequent output 23 is not generated if switch 1 is reset during generation of output 20. With push of switch 1 for period Tb of over time td, FF circuit 6 keeps the settng state. Thus clock signal 12 is obtained after time td at output 23 and via circuit 11. And this condition is kept unit switch 1 is released. |
