Design an elevator control system for an 8 floors building, draw
the logic diagram, and illustrate the system with the following
situations:
1. The car is on the ground floor, John Doe wants to go from
ground floor to 7th floor;
2. The car is on 8th floor, John Doe wants to go from 6th floor
to the ground floor;
3. The car is moving up from 4th floor to 7th floor, John Doe
wants to go from 6th floor...