RS FLIP FLOP circuit using NAND Gates in Digital Electronics|RS Truth Table|DLD in Urdu:-
RS Flip Flop is kind of Flip Flop which has two states Set and Reset. It is also called Bistable Multivibrator Circuit.Rs Flip Flop is designed using NAND or NOR Gates. As shown below.
As shown above diagram RS Flip Flop has two NAND Gates two inputs R and S. And two outputs Q and Q. See the figure carefully we see that Q output feedback to the R input and Q output feedback to the s input. So this Flip Flop has the concept of memory (i.e storage capability).
Bellow is truth table which shows the basic operation of RS Flip Flop.R and S has four input combinations.
When R and S are zeros then this is an invalid state(Not Allowed). And when R and S both are ones then this is hold state.
When R & S are different [ i.e R = 0 & S = 1 Also When R =1 and S = 0 ]
When R = 1 ; the Q output = 0 – Output is reset to 0
When S = 1 ; the Q output = 1 – Output is Set to 1