Digital Logic Design Lecture 19

Conversion JK flip Flop practice

Derivation of excitation table for JK Flip Flop

J	K	P S $Q_n$	N.S. $Q_{nm}$
0	0	X	$Q_n$	No change
0	1	X	0	Reset
1	0	X	1	Set
1	1	X	$Q_n$	Present state with toggle

J	K	$Q_n$	$Q_{n+1}$
0	0	0 1
0	1	0 1	0 0
1	0	0 1	1 1
1	2	0 1

Excitation Table for JK Flip-Flop

Truth Table of JK Flip-Flop:

J	K	P.S. $(Q_n$	N.S. $(Q_{n+1}$)	Description
0	0	X	$Q_n$	No change
0	1	X	0	Reset
1	0	X	1	Set
1	1	X	$\overline{Q_n}$	Present state with toggle $0\to 1,1\to 0$

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JK Flip-Flop State Transitions:

J	K	(Q_n)	(Q_{n+1})
0	0	0	0
0	0	1	1
0	1	0	0
0	1	1	0
1	0	0	1
1	0	1	1
1	1	0	1
1	1	1	0

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Excitation Table of JK Flip-Flop:

(Q_n)	(Q_{n+1})	J	K
0	0	0	X
0	1	1	X
1	0	X	1
1	1	X	0

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$Q_n$	$Q_{n+1}$	J	K
0	0	0	0
0	1	1	0
1	0	0	1
1	1	1	0

References

Information

• date: 2024.10.08
• time: 13:08