In an analogue system, the controller is responsible for constant brightness. Once adjusted, its impact during operation can no longer be changed. The speed of the model is controlled independently of this electronics via a joystick box outside the model.
In a digital system, a driving decoder controls the driving speed as well as other additional functions, like switching sth. on or off (eg direction indicators), dimming sth. (eg interior lighting) or volume controlling (moving vehicle).

Category: Electronics