Definitions for "Square Wave"
A wave shape that rises instantaneously to a constant value that is maintained for a set time interval, after which it instantaneously falls to a new value. The term "square" wave is a misnomer since, invariably, the wave shape produced is rectangular and not strictly square.
A waveform that jumps sharply but evenly from one extreme value to the next. |_|"|_|"|.
a kind of basic waveform