The amplitude of a square wave has a direct impact on its shape. The square wave is characterized by having two distinct levels—a high level (usually represented by the positive maximum amplitude) and a low level (usually represented by the negative maximum amplitude). The duration of each level remains constant.
When you increase the amplitude of a square wave, both the high level and the low level of the wave will increase in magnitude. Conversely, decreasing the amplitude will result in a reduction in the magnitudes of both levels.
However, it's important to note that changing the amplitude of a square wave does not affect the width or duration of each level. The width of the high level and the low level will remain the same regardless of the amplitude.
Visually, an increase in amplitude will cause the high level of the square wave to become taller (higher positive value) and the low level to become deeper (lower negative value). Similarly, decreasing the amplitude will result in a shorter vertical span for both levels.
In summary, changing the amplitude of a square wave affects the height or magnitude of both the high and low levels, while the width or duration of each level remains unchanged.