Question

1-For the following state table 

Present	Next state		Output
state	0	1	0	1
a	f	b	0	0
b	d	a	0	0
d	g	a	1	0
f	f	b	1	1
g	g	d	0	1

Note: Equivalent states: b=e, a=c, h=d

(a) Draw the corresponding state diagram. 

(b) Tabulate the reduced state table. 

(c) Draw the state diagram corresponding to the reduced state table. 

2- A sequential circuit has two JK flip-flops A and B and one input X. The circuit is described by the following flip-flop input equations:

 J_A = X' 

 K_A = A

 J_B = B' 

 K_B = X 

(a) Drive the state equations A (t1 and B (t +1) by substituting the input equations for the J and K variables. 

(b) Draw the state diagram of the circuit.

Answer 1