All about D Flip Flop

D Flip Flop:- 'D' stands for Delay so it is also called as delay flip flop.It delay the input by a clock pulse.It can either be con...

D Flip Flop:-'D' stands for Delay so it is also called as delay flip flop.It delay the input by a clock pulse.It can either be construct with clock or non clock.

Truth Table:-

D	Q(n+1)	Q(n+1)'	Action
0	0	1	Reset
1	1	0	Set

PS-NS Table(or Present State-Next State):-

Q(n)	D	Q(n+1)	Q(n+1)'	Action
0	0	0	1	Reset
0	1	1	0	Set
1	0	0	1	Reset
1	0	1	0	Set

Excitation Table or Application Table:-

Q(n)	Q(n+1)	D
0	0	0
0	1	1
1	0	0
1	1	1

Characteristic Equation of D flip flop:-

Q(n+1)=Q(n)'D+Q(n)D
=D(Q(n)'+Q(n))
=D

Circuit Diagram of D flip flop using NAND gate:-

Circuit Diagram of D flip flop using NOR gate:-

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