Which computer reads the mileage of the car?

OBD drives a computer. According to the configuration of the car, the car is equipped with an OBD driving computer, which can accurately read the mileage of the car, observe the wear degree of the brake disc, observe the wear degree of the tire and observe the wear degree of the interior by using the electronic unit protocol technology, so it is an OBD driving computer. Mileage refers to the mileage traveled by vehicles. There are two kinds of odometers for vehicles, the first is the master odometer, and the second is the subtotal odometer. The master odometer cannot be adjusted. After 1000 km, the small odometer will be automatically eliminated and mileage counting will start again.