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I've never heard a definition of a computer to include its power source.

IO is of course required.

Think that was a early computation thing -> CRT memory[0][1]

Perhaps the 'city block' heaters requiring similar sized AC condensors to provide control over Maxwell's daemon was the inspiration for the unix daemon process.

Optical computing makes fuzzy computations so much easier -> outgassing[2]

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[0] : https://spectrum.ieee.org/the-birth-of-ram

[1] : https://bunkerofdoom.com/lit/CRT-scopes/CRT_memory/index.htm...

[2] : https://spectrum.ieee.org/adhesive-outgassing-nasa-standards

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