Debouncing button or switch inputs on microcontrollers ... some other capabilities to inputs you might want to look at this interrupt service routine (ISR) method from [Lee] aka [stockvu].

I made this Arduino 8 bit binary led counter as a solution for ... debounce the button and increase the value of presses each time we press the button (when we trigger the interrupt from the setup()).

In the end, [rehsd] connected one of the digital pins from the Arduino to an interrupt pin on the computer ... representing a state for the mouse and buttons, such as MOUSE_CLICK_RIGHT and ...