Nathan Zeldes has a very cool article on the history of the On/Off power switch glyph.
Filed under: Electronic Interfaces, Examples, Physical Interfaces, Standards, Symbols, Usability | Tagged: Electronic Interfaces, Standards, Symbols, Usability
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To all, the symbol (-O) has nothing to do with 1 and zeros.
It means OPEN CIRCUIT CLOSED CIRCUIT from the old knife switch schematic. When it was written 1 and zeros were meaningless. I once asked a PHD what he thought it meant and he said ” On ” ” Off ” well duh, true meaning=OPEN CIRCUIT CLOSED CIRCUIT