What is the purpose of using digital encoding schemes??
What will be an ideal response?
To transmit digital data using digital signals, the 1s and 0s of the digital data must be converted to the proper physical form that can be transmitted over a wire or airwave. Thus, if you wish to transmit a data value of 1, you could do this by transmitting a positive voltage on the medium. If you wish to transmit a data value of 0, you could transmit a zero voltage. You could also use the opposite scheme: a data value of 0 is positive voltage, and a data value of 1 is a zero voltage. Digital encoding schemes like this are used to convert the 0s and 1s of digital data into the appropriate transmission form. There are six digital encoding schemes that are representative of most digital encoding schemes: NRZ- , NRZI, Manchester, differential Manchester, bipolar-AMI, and 4B/5B.?
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