Show how the circuit derived in Problem 6.15 can be modified such that the code y₄y₃y₂y₁ = 0000 is used for the reset state, A, and the other codes for stateB, C,Dare changed as needed.

Data From Problem 6.15

Show a state table for the state-assigned table in Figure P6.1, using A, B, C,D for the four rows in the table. Give a new state-assigned table using a one-hot encoding. For A use the code y₄y₃y₂y₁ = 0001. For states B, C,D use the codes 0010, 0100, and 1000, respectively. Synthesize a circuit using D flip-flops.

Present state Y2Y1 00 01 10 11 Next state W = 0 Y2Y1 10 01 11 10 w = 1 Y2Y1 11 00 00 01 Output Z 0 0 0 1