題組內容

Problem 3: (20 points) Consider the following sequential circuit. 6141549741a62.jpgAssume that the four D-flip-flops are triggered by the same clock signal, the flip-flop propagation delay is 1 ns, the flip-flop setup cime is 2 ns, the input signal X has delay 2 ns, the OR gate has delay 3 ns, and the XOR gate has delay 4 ns.

(d) (5%) Assume the circuit is initially in state (A,B,C,D) = (0,0,0,0). Determine the corresponding state-transition sequence and output sequence with respect to the input sequence 0, 1, 1.