Question

1. (a) Using the minimum 2-level SoP logic required, design a sequential circuit with three T flip-flops, A, B and C, and two inputs E and X that performs as follows: IfE 0 the circuit remains in the same state regardless the value ofX, When E-1 and X-1 the circuit goes through the state transitions 000 to 001 to 010 to When E = 1 and X = 0 the circuit goes through the state transitions l l l to 1 10 to 101 to (b) Is the countup self-starting, i.e. if X remains at 1? Justify. Include state transition (c) Is the countdown self-starting, i.e. if X remains at 0? Justify. Include state transition 011 to 100 back to 000, and repeats, 100 to 011 back to and repeats. diagram. diagram.

Answer 1

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