seatwork-002

1) Analyze the clocked synchronous state machine in Figure. Write excitation equations, excitation/transition table, and state/output table (use state names A–D for Q1 Q2 = 00–11).

2) Analyze the clocked synchronous state machine in Figure. Write excitation equations, excitation/transition table, and state table (use state names A–H for Q2 Q1 Q0 = 000–111).

3) Analyze the clocked synchronous state machine in Figure. Write excitation equations, transition equations, transition table, and state/output table (use state names A–D for Q1 Q0 = 00–11). Draw a state diagram, and draw a timing diagram for CLK, EN, Q1, and Q0 for 10 clock ticks, assuming that the machine starts in state 00 and EN is continuously 1.

4) A sequential Circuit with 2 D flip flops A and B, 2 inputs X and Y and 1 output Z is  specified with the following input equations.

                    DA = X'A + XY      DB = X'A + XB      Z = XB

            a) Draw the Logic Diagram of the circuit.

            b) Derive the State Table

            c) Derive the State Diagram.

5) A sequential Circuit has 2 D flip flops A, B and C and 1 inout X.  The circuit is described by the following input equations.

            DA = (BC' + B'C)X + (BC + B'C')X'

            DB = A

            DC = B

        a) Derive the STate Table of the Circuit.

        b) Draw the 2 state Diagrams, one for X=0 and the other for X=1.

6) A sequential circuit has 2 SR flip flops, 1 input X and 1 output Y.  The logic diagram of the circuit is shown in Figure.  Derive the State Table and State Diagram of the Circuit.

8) Design asequential circuit with 2 D flip flops A and B and 1 input X.  When X=0, the state of the circuit remains. When X=1, the circuit goes thru the state stransition from 00 to 10 to 11 to 01 back to 00 and then repeats.

9) A  sequential circuit has 2 flip flops A and B, 1 input X and 1 output Y.  The State Diagram is shown in FIgure below.  Design the Circuits using D Flip flops.

10) A sequential circuit with 2 D flip-flops A and B, two inputs x and y, and one output z is specified by the following next-state and output equations ;

                    A(t + I) = x'Y + xA

                    B(t + 1) = x'B + xA

                    z = B

    a) Draw the Logic Circuit Diagram.

    b) List the State Table 

    c) Draw the State Diagram

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