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
Practice for creating and instantiating sub-circuits into a larger circuit, includes gate logic for some circuits like 2-to-1 mux and 3-to-8 decoder, as well as bit-to-bus combiner and FSM logic using T flip-flops.