4. Write down the purpose of JK flip-flops, D flip-flops, and T flip-flops. Construct a sequential circuit from the given state diagram using T flip-flops. The state diagram represents a circuit that has Three Flip-Flops. The unused states should be treated as don't care conditions. 1+6 010 0/1 1/1 1/1 000 100 1/0 1/1 110 0/1 1/1 0/0 0/0 0/1 101 111 / 1/0 Fig 1: State diagram of a Sequential circuit Q 0 0 0 1 1 Qnext 0 1 0 1 1 1 0 Fig 2: Excitation table of T Flip-Flop