Abstract
SCM since the 20th century since the advent of the 1970s, with its high cost performance, by the people's attention and concern, a very wide application, developed very quickly. 51 SCM SCM is the most typical and most representative one.
The design of a microcontroller chip and the AT89C51 stepper motor at the core, supplemented by the necessary external circuit, the design
The design of a single AT89C51 ? epiphyseal Dao break Cynoglossus ? DC0809 at the core of First Instance, to speed sensor, the odometer counter, thermistor sensors, pressure sensors as the main external components, combined with the necessary external circuit, and the car Instrument Design and Implementation of the instrument system is accurate, reliable and easy to use the advantages of the vehicle instrument on behalf of the latest trends.
Keywords
Automobile Instrument AT89C51 SCM stepper motor