History Lesson Originally, all elevators were controlled by an elevator operator who would verbally ask you which floor you wished to go to and would then control the elevator from within the car ...

How powerful algorithms decide when that elevator car is finally going to come pick you up. By Jesse Dunietz Updated: Sep 02, 2019 9:00 AM EDT You walk to the elevator, you hit the Up button, and ...

The DC motor must drive the car downward because the counterweight is heavier than the car. However, the upward movement of the car occurs naturally because of the counterweight. The motor must then ...