Automotive electronic control device: the automotive electronic control device should be used in conjunction with the mechanical system on the vehicle, that is, the so-called "electromechanical combination" of automotive electronic devices; They include engine, chassis and body electronic control. For example, electronic fuel injection system, anti lock braking control, anti slip control, traction control, electronically controlled suspension, electronically controlled automatic transmission, electronic power steering, etc,

On board automotive electronic device: on board automotive electronic device is an electronic device that can be used independently in the automotive environment, and it is not directly related to the performance of the vehicle itself. They include automobile information system (driving computer), navigation system, automobile audio and television entertainment system, on-board communication system, automobile tire pressure monitoring system, Internet access equipment, etc.