D Flip Flop from J-K Flip Flop

D flip flop is a fundamental building block in digital circuits, which is used to store a single bit of data. It has a single input called the data input (D), which controls the state of the flip flop. The output of the flip flop is the state of the stored data. A D flip flop can be realized from a J-K flip flop by connecting the J and K inputs together and feeding the same input to both of them.

Explanation

The J-K flip flop has two inputs, J (set) and K (reset), and two outputs, Q (state) and Q' (complement). It can store one bit of information and has two stable states: SET and RESET. When J=K=0, the flip flop maintains its current state. When J=K=1, the flip flop toggles its state. When J=1 and K=0, the flip flop sets its state to 1. When J=0 and K=1, the flip flop resets its state to 0.

To convert a J-K flip flop into a D flip flop, we need to connect the J and K inputs together and feed the same input to both of them. This means that J=K=D. The truth table for the D flip flop is as follows:

D | Q | Q'
--|---|---
0 | 0 | 1
1 | 1 | 0

To implement this truth table using a J-K flip flop, we can connect the D input to both the J and K inputs of the flip flop. This means that J=K=D. The truth table for the J-K flip flop with J=K=D is as follows:

D | Q | Q'
--|---|---
0 | 0 | 0
1 | 1 | 1

As we can see, the truth table for the J-K flip flop with J=K=D is the same as the truth table for the D flip flop. Therefore, a D flip flop can be implemented using a J-K flip flop by connecting the J and K inputs together and feeding the same input to both of them.