Principles Digital Communication System & Computer Networks (Charles River Media Computer Engineering)
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6.3 NON-RETURN TO ZERO INVERTIVE (NRZ-I)
In NRZ-I, binary 0 is represented by 0 volt and binary 1 by 0 volt or +V volts, according to the previous voltage. If the previous voltage was 0 volt, the current binary 1 is +V volts. If the previous voltage was +V volts, then the current binary 1 is 0 volt.
In NRZ-I, 0 is represented by 0 volt and 1 by 0 volt or +V volts, based on the previous voltage level.
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