T flip-flop is known as toggle flip-flop. The T flip-flop is modification of the J-K flip-flop. Both the JK inputs of the JK flip – flop are held at logic 1 and the clock signal continuous to change as shown in table below.
Truth Table of T flip-flop
Clk
T
Q
Q’
0
1
Previous or memory state
0
0
1
0
1
1
Toggle state