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A new two input Flip Flop is designed as shown. Table shows the characteristic table of AB flip flop.The Combination Logic is :- 

 

A.

 

B.

 

C.

 

 D. 

 

2 Answers

Best answer
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Then you should know about the JK Flip Flop Characteristic table 

Characteristic Table

J K Qn Qn+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

Excitation Table of JK we make with help of Characteristic Table

Qn Qn+1 J K
0 0 0 #
0 1 1 #
1 0 # 1
1 1 # 0

 As function Table mentioned in the question above with the help of that we fill Qn+1. And with the help of Excitation table of JK we will JK values

A B Qn Qn+1 J K
0 0 0 1 1 #
0 0 1 0 # 1
0 1 0 1 1 #
0 1 1 1 # 0
1 0 0 0 0 #
1 0 1 1 # 0
1 1 0 0 0 #
1 1 1 0 # 1

Minterm of J  in form of AB = A'B'+A'B 

Minterm of K in form of AB = A'B'+AB

D option Match this way.

 

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