(a) Given the random binary data sequence 0 1 1 0 0 0 1 0 1 1. Provide waveform sketches for:
(i) NRZ change;
(ii) Split phase.
(b) Demonstrate satisfactorily that the split-phase waveform can be obtained from the NRZ waveform by multiplying the NRZ waveform by a ±1-valued clock signal of period T.