You know what a button is! It’s a classic: big, round, and springy. Push to turn your creation on, and release to turn it off. Snap a buzzer in place after your button to sound out signals in morse code!
The button is like a door. When you press it, the door opens, letting the signal pass through the Bit and on to the next Bits in the circuit. The button is a momentary switch, you must continue to press it for the signal to flow. When you release the button, the door closes, stopping the signal from passing on to other Bits.