How do the little, pinhole-access Battery Reset buttons work on laptop?
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For electricity to move through a circuit, there has to be a connection from one side of the power source (the “negative”) to the other (the “positive”). If there’s not a complete, unbroken path, electricity can’t move.
Buttons are made of two bits of wire that aren’t quite connected and a piece of wire that, if moved, connects the other two. So when you push the button, all of the wires are connected and electricity can flow. That causes something to happen.
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