design a FSM state machine vending machine that accepts $$1\mathrm{.}5$ for one can of coke. The accepted money should be quarters or one dollar bill or mixed. If the customer entered $2$ dollar the machine should return $2$ quarters back.Draw a state diagram.

Write output and next state tables.

Encode states, inputs, and outputs as bits.

Determine logic equations for next state and outputs.

Draw the circuit.