Q.2 [4+4+4+3] A sequential circuit has one flip-flop, two inputs X and Y, and one output S. The circuit consists of a D flip-flop with S as its output and logic implementing the function: with D as the input to the D flip-lop. a) Draw the logic diagram of the circuit. 4 b) Derive the state table.4 c) Draw the state diagram.4] d) Does the circuit represent a Mealy machine or a Moore acie? Justify your answer. 3