Unit for operating a computer in a motor vehicle by selecting different functions includes one or more parts of an operating unit fastened to a vehicle's steering wheel.

摘要

An operating unit's parts (2,3) are fastened on a motor vehicle steering wheel (1) but can be detached. One or more of these parts has a track ball (4), a triggering element (5,6) and a twist-grip causing a cursor to move on a display matching twists made by the grip.