Time, delay, etc. The functions of monostable flip-flop circuit include timing, delay, pulse shaping and noise elimination. The timing function uses the rectangular pulse output by monostable as the timing signal to control a circuit, and the delay function is often used to control the timing from the working waveform of the differential monostable trigger. Under the action of trigger pulse, monostable trigger changes from steady state to transient state, and after the transient state is maintained for a period of time, it will automatically return to steady state.