[guepe]

De bouncing is solved in hw with right-sized capacitor. That's it....

[ilyt]

You need schmitt trigger input to do it properly and most microcontrollers don't have it.

[rowanG077]

I really, really hate HW solution for something so easily solved in Software.

[numpad0]

In reality you implement both. Basic noise filtering in hardware, plus rate limiting or something in software.

onClick event handlers in most GUI triggers on mouse button releases, for example.