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:


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