Other differences include engine placement, where Airbus generally places the engines under the wings, while Boeing mounts them on the forward of the wing. However, this placement changes depending on the design of the planes. One major difference is the electronics that is used in the planes. Airbus planes are controlled using sidestick, this is similar to a joystick that is used to play computer games. Boeing uses a central yoke and has a steering wheel design that is used as the main controller. Airbus also has incorporated hard protection using the fly by wire systems. This means that system of the planes cannot be overrun. The pilot cannot assume full control of the system and do something drastic such as stall it, overstress the airframe, etc. In Boeing, the pilot can perform all these functions by simply overriding the pilot system. The controls in Boeing also have feedback or feels, which are missing in Airbus controls. Boeings can be stalled, flown beyond airframe limits, etc. if the pilot ignores warnings.