[eli5] How does a button on keyboard or mouse slowly become non functioning

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so i had a mouse the recently the left mouse button suddenly stoppwd working so now was wondering how the buttons work

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2 Answers

Anonymous 0 Comments

Even at its very basic, there is a wire underneath the key that gets pressed into another wire, completing a circuit, letting the computer know that key got pressed.

If either of those wires are damaged, and the circuit can’t complete, then the key stops working.

Anonymous 0 Comments

Even if it is a membrane keybaord there are still mechanical parts. All mechanical parts are prone to breaking