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Unread 14-02-2006, 07:39
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Alan Anderson Alan Anderson is offline
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Re: 0 or 1?

Quote:
Originally Posted by KenWittlief
with digital logic the higher voltage signal is always called 1 or H, and the low voltag signal is always 0 or L.
Never say "always".

What you're describing is called positive logic and is how most digital circuits work, including most of the Robot Controller. However, negative logic exists as well. RS-232 serial communication uses negative logic, with a positive voltage being logic 0 and a negative voltage being a logic 1.
 


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