>Absolute encoder gives you position, typically in something like
>a Gray code (a binary code which, like the usual, has 2^N states
>for N bits, but only one bit changes at a time, which makes
>things a lot easier- they can easily be converted back and
>forth).
>
>does this mean there is a unique number/output for each spot
>on the encoder?

Yes, otherwise it cannot give you an absolute position.

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