In my earlier post I discussed on conversion of SR Flip flop to T Flip flop. Now we see conversion of D Flip flop to SR Flip flop by some simple steps.
Step 1 : For conversion of D Flip flop to SR Flip flop at first we have to make combine truth table for SR flip flop and D Flip Flop. In bellow see the combine truth table of SR flip flop and D Flip Flop.
From above truth table we can understand that what are those different inputs of D flip flop and SR flip flop, we need to get the output Q.
Step 2: Now from above truth table we can draw the Karnaugh map for input D flip flop. Then we can easily get the relation between SR with D. For that see bellow
Now from this above Karnaugh map we get the relation D = S + R^Q.
Step 3 : Now as per the relation of S R with D flip flop from Karnaugh map we can easily build SR Flip Flop using D Flip Flop.