摘要： 现在可以说单片机是百花齐放，百家争鸣的时期，世界上各大芯片制造公司都推出了自己的机器，花样不断翻新，种类繁多，有的和C51系列兼容，有的却不兼容，无论是否兼容，但它们都有自己的特点，这就为单片机的普遍应用打下了坚实的基础。    本文主要分析并着重研究多机单片机的构成的主从式多机通信系统,其中从机具有相同权限。主机可以向从机发出信号，也可以接受信号。通过Proteus的模拟和仿真让功能实现。本设计的难点在于如何使多台单片机在相同权限下相互通信，并且从机可以向主机发送信息汇总。32047
本研究已经仿真通过，真实可行。具有一定的检错能力，串行通信的比特率是9600bit/s，通信速度较快，且可靠性高。本研究通过硬件电路解决了主机和从机间的相互通信，从机和从机间的相互通信。
毕业论文关键词：    单片机；多机通信；主从式；
Proteus simulation of single-chip machines communication system
Abstract:SCM can now say that the Hundred Flowers period, the world's major chip manufacturing companies have launched their own microcontroller, from eight, 16-32, numerous, everything, that is compatible with mainstream C51 series, there are not compatible but they are distinctive, mutual complementary, providing a vast world microcontroller applications.
     This paper focuses on the multi-SCM master-slave multi-machine communication system configuration, wherein the machine with the same authority. The host can send a signal to the machine, you can accept the signal. Through modeling and simulation Proteus let function implementation. The design of the difficulty is how to make more than one microcontroller to communicate with each other at the same privileges, and can be sent from slave to master information summary.
This study has been through simulation, real feasible. Has a certain error detection capability, bit rate serial communication is 9600bit / s, the communication speed, and high reliability. In this study, the hardware circuit to solve the master and slave machines communicate with each other between the slave and slave communicate between machines.
Keywords:    MCU; Multi machine communication; master-slave mode
 目 录
摘要    i
Abstract.......ii
1、绪 论    1
1.1课题背景的和意义    1
1.2国内外研究现状    3
1.3单片机间的多机通信技术    5
2、系统设计相关原理    6
2.1系统设计原理    6
2.1.1.系统框图    6
2.1.2系统原件说明    6
2.2单片机AT89C51芯片简介    8
2.2.1主要特性    9
2.2.2管脚说明    11
2.2.3.振荡器特性    14
2.2.4.芯片擦除    14
3、系统硬件设计    15
3.1总硬件电路图    15
3.1.1.晶振和复位电路：    15
3.2单元电路的设计    16
3.2.1主机电路    16
3.2.2从机电路    16
4、系统软件设计    18
4.1软件总程序设计    18
4.2主机通信子程序    19
4.3从机通信子程序    23
5、系统仿真设计    24
5.1软件介绍    24
5.1.1Proteus系统概述    24
5.1.2Proteus的主界面介绍    24
5.2仿真系统的设计与调试    26
5.3结果分析    29
6、总 结    31
致 谢    32 基于Proteus仿真单片机的多机通信系统设计+电路图:http://www.youerw.com/tongxin/lunwen_28441.html