TastendruckEntprellung

TastendruckEntprellung, also known as debouncing, is a technique used in electronics and software to prevent false signals from being registered when a physical button or switch is pressed or released. When a button is activated, its mechanical contacts can bounce open and closed rapidly for a short period before settling into a stable state. This bouncing can cause a microcontroller or other digital circuit to interpret multiple presses for a single physical action.

The primary goal of debouncing is to ensure that only one valid signal is registered per button press. There are two main approaches to implementing TastendruckEntprellung: hardware debouncing and software debouncing. Hardware debouncing typically involves using electronic components like capacitors and resistors to create a delay circuit, which filters out the rapid fluctuations caused by contact bounce.

Software debouncing, on the other hand, is implemented within the program code. This usually involves measuring the time between detecting a change in the button state. If the state change persists for a predetermined duration (e.g., a few milliseconds), it is considered a valid press or release. If the state changes back within this time, it is ignored as noise. Both methods aim to achieve the same outcome: a clean, reliable signal from a mechanical input.