A D flip flop (also known as a "delay flip flop" or "data flip flop") is a type of flip flop that is used to store a single bit of data. It has two inputs: the data input (D) and the clock input (CLK). The output of the D flip flop changes state based on the input data and the clock signal.

Working of D Flip Flop

The basic operation of a D flip flop is as follows:

• When the clock signal is low, the flip flop holds its current state and ignores the D input.

• When the clock signal is high, the flip flop samples and stores the D input.

• The value that was previously fed into the D input is reflected at the flip flop’s Q output.

• If D = 0, then Q will be 0.

• If D = 1, then Q will be 1.

• The Q’ output of the flip flop is the complement of the Q output.

Characteristic Table of D Flip Flop