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

I have not even looked at the comments, but 1 is an ON and 0 is an off, and comes from base 2 Mathematics, in other words Binary. It is the fundamental basic of transistors.

1 – Power applied
0 – Power not applied.

It is how the RAM in your computer works, it is how the CPU works.

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