a$.$ Latches.

b$.$ Flip$-$flops.

Question $7$: $[20$ marks$]($Moderate$)$

Assuming the memory units in the circuit in Figure $1$ are flip$-$flops:

a$.[10$ marks$]$ Draw the state $($transition$)$ diagram. $($hints: there would be $4$ nodes based on different combinations of AB: $00,01,10,11.$ From each node there would be two output directed edges based on whether $\backslash ($ x $\backslash )$ is $0$ or $1.$ Ignore $\backslash (\backslash$boldsymbol$\{$F$\}\backslash ).)$

b$.[5$ marks$]$ Derive the state table.

c$.[5$ marks$]$ Is the circuit based on the Mealy or Moore model? Justify your answer.