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* A [[linear encoder]] similarly converts linear position to an electronic signal.
Such encoders can be either absolute or incremental. The signal from an absolute encoder gives an unambiguous position within the travel range without requiring knowledge of any previous position. The signal from an [[incremental encoder]] is cyclical, thus ambiguous, and requires counting of cycles to maintain absolute position within the travel range. Both can provide the same accuracy; the absolute encoder is more robust to interruptions in transducer signal, whereas the incremental encoder reports position changes in real time.
===Electronic circuits===
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