WHY are the symbols for power on / off “|” and “◯”?

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What are/were they meant to represent? When were they introduced? I can’t find any consistent reliable sources. I’d really appreciate references if anyone has any!

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Anonymous 0 Comments

Binary is setup as a “1” and “0”, or “on” and “off”, respectively. It’s easier to put a 1/0 instead of on/off as it is a universal language.

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