1, pulse shaping. When the steepness of the rising edge and falling edge of continuous pulse can't meet the requirements, or the pulse width and amplitude are the same, it can be used as the input trigger signal of monostable trigger, so that the shaped pulse signal with the same pulse width and amplitude and steep rising edge and falling edge can be obtained at the output end of trigger.

2. Timing function. By adjusting the parameters of R and C, the output pulse width of monostable trigger can be a certain value, which can be used as one of the input signals of AND gate.

3. Delay effect. It means that the falling edge of monostable output pulse waveform lags behind the falling edge of trigger pulse.