One useful component in our circuits is a button.
It connects two parts of a circuit when the button is pressed. As soon as the button is released, the circuit is open and the current can’t circulate.
Here’s a typical button:
It has 2 sets of connections that can be closed at the same time. The connections are on the pins that are curved in the same way:
There’s one way to use this component in a breadboard, and it’s to put it in the middle:
and there’s just one way to add it, you can’t go wrong:
Then you can create a connection between 2 rows in the same part of the breadboard, like this:
In the above circuit, the LED will turn on only when the button is pressed: