Abstract
This text expound the fact through using basic principle of Mcs51 and compilationlanguage and VB programming language go serial communication and database opoerating programme Long-distance communication system has come to realize the oilstone varies voltage in the design of the preface. Use Protel CAD software to finish the principle picture of the circuit , PCB design in this course. The main design principle of this system is to utilize the computer to gather the data that are transmitted over to deal with , store and analyse， to control the on-the-spot part data of the scene through the one-chip computer at the same time. If the accident presenting, it shows the error through the communication system.
The whole design includes circuit design of the hardware , software design and dedug of software and hardware . The Design content mainly uses the one-chip computer and and p serial communication rinciples of gathering the raspect of data, there are applications in many aspects in the project.
