Pulse signal is a kind of discrete signal with different shapes. Compared with ordinary analog signals (such as sine waves), the waveforms are discontinuous on the Y axis (there are obvious intervals between waveforms) but have a certain periodicity. The most common pulse wave is a rectangular wave (square wave).
The pulse signal can be used to represent information, as a carrier wave, such as pulse code modulation (PCM) and pulse width modulation (PWM), and as a clock signal for various digital circuits and high-performance chips.