JK flip flop TFlip flop JK flip flop

JK flip flop T-Flip flop

JK flip flop • Three inputs J, K and Clock • Two outputs Q and complement of Q • Output of Q is connected to the input of N 4 • Output of Q complement is connected to the input of N 3

JK flip flop • Most widely used flip flop • This flip flop has no in valid state • Widely used in digital devices – Counters, arithmetic logic units

JK flip flop • When J=0, K=0 and Clock=1, the output of N 3 is 1 and the output of N 4 is also 1 result the output of N 2 is 0 and the output of N 1 is 1 and the comment is no change or Latch

JK flip flop • When J=0, K=1 and Clock=1, the output of N 3 is 1 and the output of N 4 is also 1 result the output of N 2 is 0 and the output of N 1 is 1 and the comment is reset

JK flip flop • When J=1, K=0 and Clock=1, the output of N 3 is 0 and the output of N 4 is 1 result the output of N 2 is 1 and the output of N 1 is 0 and the comment is set

JK flip flop • When J=1, K=1 and Clock=1, the output of N 3 is 1 and the output of N 4 is also 0 result the output of N 2 is 0 and the output of N 1 is 1 and the comment is Toggle

T-Flip flop • It is a single input version of the JK flip flop • It is obtained from the JK flip flop when both the inputs are tied together • In a JK flip flop if J=K, then the flip flop is said to be T-flip flop

T-Flip flop • It has only one input called T or Toggle input • The toggle flip flop toggles the output Q on every clock pulse • When clock=0, whatever may be the value of T input, output remains in the last state

T-Flip flop • When clock = 1 and T=0, output remains in the last state • When clock=1 and T=1 , the output changes its state • There fore this flip flop is called as Toggle flip flop