Design and implement a finite state machine which controls the operation of an elevator in a 2-story building.

the finite state machine (fsm) has 1 input:

1. enable (enables operation of elevator)

the fsm has three outputs:

1. door (if door == 0, door is closed if door == 1, door is open)

2. current floor number (display the current floor using a 7-segment display).
3. moving (display that the elevator is moving)

the operation of the elevator is as follows:
 the elevator must begin in an idle state (on one of the two valid floors) with the door closed.

 the user should set the enable input to move the elevator to the other floor. it is theresponsibility of the user to reset the enable input before leaving the elevator.