Multiple choice

In which of the following is 1 bit encoded as a zero voltage and the 0 bit is encoded as alternative positive and negative voltages?

  1. Polar schemes

  2. Unipolar schemes

  3. Return to zero

  4. Pseudoternary

  5. Alternate mark inversion

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D Correct answer
Explanation

Here, the 1 bit is encoded as a zero voltage and the 0 bit is encoded as alternative positive and negative voltages.