We use buttons dozen of times in every day. We always press buttons when ringing the bell, answering the callings, typing on keyboard etc. The module of Makey Button is one of them. You can consider the button module like a gate. After we press the button, the gate open and signal on input can pass the next module. However, we must press button continuously for the signal to ow. When you release the button, the door closes and the signal can’t pass the next module.