What is bouncing for a button?

The mechanism of a push button can lead to an irregular button signal state transition. Ideally, a button-clicking signal should be a single shot from low-to-high or high-to-low. However, in practical applications, buttons utilize a spring to return to their original state after being pushed, causing the button signal to bounce up and down randomly. Consequently, when working on projects that involve buttons, it is crucial to incorporate a debouncing design to address this issue.

Demonstration