Question

We wish to design a digital system with two flip-flops, say B and C, and one 10 bit binary Counter A, in which the individual flip-flops are denoted by A10, A9, A8, A7, A6, A5, A4, A3, A2, A1.

A start signal S initiates the system operation by clearing the counter A and flip-flop C, and setting flip-flop B to one.

The counter is then incremented by one starting from the next clock pulse and continues to increment until the operations stop.

Counter bits A3 and A4 determine the sequence of operations:

a) If A3 = 0, B is cleared to 0 and the count continues.

b) If A3 = 1, B is set to 1; then if A4 = 0, the count continues, but if A4 = 1, C is set to 1 on the next clock pulse and the system stops counting.

c) If S = 0, the system remains in the initial state, but if S = 1, the operation cycle repeats.

Draw the ASMD chart for this design

Answer 1