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This question already has an answer here:

In binary a unit (bit), can store 2 separate values.

if you have ternary, then a unit can store 3 separate values.

why then don't computers use higher bases, for example in ternary you could have 3 different voltages, and even if transistors got a little bigger, wouldn't it still be more efficient?

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marked as duplicate by David Richerby, Raphael Feb 23 '15 at 22:34

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

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  • 3 different voltage levels makes building circuits harder and it is easier for little errors to occur in the signals.
  • Circuits need complex logic instead of the easy boolean logic which works perfectly.
  • Ternary is not compatible with binary that all computers use.
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