Flip-flop Conversion – JK flip-flop to D flip-flop

Here you will see how to implement a D flip-flop from JK flip-flop step by step – Flip-flop Conversion – JK flip-flop to D flip-flop

Here the required flip-flop is D- flip-flop

Hence you need to write the truth table of D flip-flop which is

In this case the given flip-flop is JK flip-flop

Therefore, you need to write the excitation table of JK flip-flop which is

The conversion table, which is a combination of truth table and excitation table, to implement a D flip-flop from JK flip-flop is as follows

In this case the given flip-flop is JK.

Therefore, write the Boolean expressions for J and K from the conversion table using K-Maps.

K-Map for J:

Expression for J would be

J = D

Now, K-Map for K:

Therefore, Expression for K would be

K = D^/

For this, connect the J input of the given flip-flop (JK flip-flop) to D as obtained from the expression of J.

And connect the K input of the JK flip-flop to D^/, as obtained from the expression of K.

Therefore, the circuit would be:

In this way a D flip-flop can be implemented using a JK flip-flop. Hope this post on “Flip-flop Conversion – JK flip-flop to D flip-flop” would help in clearing many doubts in flip-flop conversions.

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