Given below is the diagram of a synchronous sequential circuit with one $\text{J-K}$ flip-flop and one $\text{T}$ flip-flop with their outputs denotes as $\text{A}$ and $\text{B}$ respectively, with $J_{A}=\left ( {A}' + {B}' \right ),\: K_{A}=\left ( A+B \right ),$ and $T_{B}=A$.
Starting from the initial state $\left ( AB=00 \right )$, the sequence of states $\text{(AB)}$ visited by the circuit is
- $00\rightarrow 01\rightarrow 10\rightarrow 11\rightarrow 00 \cdots$
- $00\rightarrow 10\rightarrow 01\rightarrow 11\rightarrow 00 \cdots$
- $00\rightarrow 10\rightarrow 11\rightarrow 01\rightarrow 00 \cdots$
- $00\rightarrow 01\rightarrow 11\rightarrow 00 \cdots$