A circuit has 1 input X and 2 outputs A and B. If X = HIGH
for 4 clock ticks, A = 1. If X = LOW for 4 clock ticks, B =
1. Draw a state diagram for this Spec?

Answer Posted / techie

PS X NS A B
S0 0 S1 0 0
S0 1 S2 0 0
S1 0 S3 0 0
S1 1 S2 0 0
S2 0 S1 0 0
S2 1 S4 0 0
S3 0 S5 0 0
S3 1 S2 0 0
S4 0 S1 0 0
S4 1 S6 0 0
S5 0 S0 0 1
S5 1 S2 0 0
S6 0 S1 0 0
S6 1 S0 1 0
This would be for non overlapping sequence. The above post correctly captrued overlapping sequence.

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