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non-return-to-zero[′nän ri‚tərn tə ′zir·ō]
A mode of recording and readout in which it is not necessary for the signal to return to zero after each item of recorded data. Abbreviated NRZ.
NRZ(Non-Return-to-Zero) A data modulation method in which the 0s and 1s are represented by different polarities, typically positive for 0 and negative for 1. See NRZI.
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