The question is the basics of how a computer works, most people seem to think it is magic or something, I would like to understand.
Is it an electric charge that goes on a chip? how does that translate into a screen?
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Computers run code, but also do input and output, or I/O. There are way too many ways this happens to even summarize. Input devices convert whatever they are doing into numerical information, then code running on the computer interprets it. It then can send data to an output device. These devices use a wide variety of circuits. In the case of a keyboard, there are matrix decoders, shift registers, and others. There are lots of books on computer basics and digital electronics, I’d check one of those out.
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