We are going to have fun. Yes, this is the very special moment when we are going to link the physical world to the virtual world. Arduino is all about this.
A switch is an electrical component that is able to break an electrical circuit. There are a lot of different types of switches.
Some switches are called toggles. Toggles are also named continuous switches. In order to act on the circuit, the toggle can be pushed and released each time you want to act and when you release it, the action continues.
Some others are called momentaries. Momentaries are named push for action too. In order to act on the circuit, you have to push and keep the switch pushed to continue the action. ...