译文:Abstract: This paper presents a AT89C2051 as the core, using SCM computing and control functions, and using systematic LED display real-time display module measured by the speed and the speed of odometer mileage design programmes, as well as serial data storage circuit and system software . The programme because of the systematic use of LED display modules and E2PROM, rapid and highly efficient algorithms, which can save system resources and simplify procedures on the basis of design guarantee the accuracy and real-time systems.
Key words: speed mileage measurement; microcontroller; systematic LED display modules, serial data storage circuit; real-time data processing