[ELI5] How computers work using only 1s and 0s?

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[ELI5] How computers work using only 1s and 0s?

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Answer 1

I once heard it described this way: a computer is basically a complicated system of millions, if not billions—some huge number, anyway—of electrical switches. Those switches are either on or off, which is why they’re operated by binary code, which is only ever a 1 or a 0.