The edge triggered J-K Flip flop

•The J-K Flip flop is versatile and is widely used type of flip flop. The functioning of this flip flop is identical to R-S flip flop in the SET-RESET ,and no change conditions of operation. The difference is that The J-K ff has no invalid state as does the R-S ff. The two control input J-K in honor to Jack and Kilby who invented the

integrated circuit .

The logic diagram for J-K FF

Q'

2

Q

1

R-S Flip -flop

S

R

Q

Q'

G2

G1

K

3

CLK

2

J

1

The truth table for J-K FFCOMMENTS Q’ Q CLK K J

No change Qo’ Qo LOW-HIGH 0 0RESET 1 0 LOW-HIGH 1 0

SET 0 1 = 0 1Togle Qo Qo’ = 1 1