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Question 2: 25 minutes a) Obtain the next-state and output functions of the sequential circuit in Figure 2 where D is the unit delay flip-flop. b) Fill in the table for the input sequence and the initial state shown in the table. t 0 1 2 (40 pts.) 3 4 5 a 0 1 1 0 1 b 1 d O 1 0 0 0 Z c) Describe in words what this circuit does? d unit delay z