SR flip-flop to JK flip flop

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written 5.9 years ago by

teamques10 ★ 69k

modified 3.2 years ago by

sagarkolekar ★ 11k

digital logic design

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1 Answer

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written 3.2 years ago by

sagarkolekar ★ 11k

Step 1: General model to convert flip-flop.

enter image description here

Step 2: Present state next state table of J-K f/f with excitation table of S-R f/f.

Qn	Jn	Kn	Qn + 1	Sn	Rn
0	0	0	0	0	x
0	0	1	0	0	x
0	1	0	1	1	0
0	1	1	1	1	0
1	0	1	0	0	1
1	1	1	0	0	1
1	1	0	1	x	0
1	0	0	1	x	0

Step 3: simplifying logic expressions for Sn and Rn.

enter image description here $\therefore S_n = J_n Q_n$

enter image description here $\therefore R_n = K_n Q_n$

Step 4: Circuit diagram.

enter image description here

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