毕业设计（论文）-单片机与PC机的串行通信设计精选.doc

江苏信息职业技术学院 毕业论文 题目： 单片机与PC机的串行通信 系 别： 计算机信息工程系 专 业： 计算机应用 学 号： 29 姓 名： 指导老师： 2006年 05月10日 前言 在实际应用中，单片机往往不是作为一个独立的控制单元而存在，它还要和其他控制单元进行通信。这些控制单元可以是另一个单片机，也可以是PC机。大多数单片机都含有一个可编程全双工串行通信接口，每台PC 机中都有内置的RS232C串行端口，二者可以通过一定的硬件电路实现硬连接。如果双方均遵循同样的通信协议，就可以互相通行。 而对于单片机，串口（UART）是最常用的端口，尤其对于存在两个或多个串口的单片机来说，充分利用串口进行通信是非常重要的。 设备上想要具备通信传输的功能，最简单的方法就是使用串行通信的方式。因为PC机具有强大的监控和管理功能，单片机则具有快速容易控制的特点，在数据量不大、传输要求不高的情况下，一般都采用给机配置的RS-232标准串行接口COM1、COM2等相连接来实现应用系统与PC机之间的数据交换。本文了在VB环境下如何实现单片机与之间实现串行通讯This article simply introduced VB some mainly control, how with realizes between the monolithic integrated circuit and the computer under the VB environment realizes the serial communication. This article altogether is divided four chapters: First chapter mainly understands the serial communication the basic concept. Needs RS-232 in this experiment the connection, therefore in article simple introduction RS-232 connection application, serial communication and synchronous communication and asynchronous communication difference. Second chapter the monolithic integrated circuit string mouth method narrated the string mouth work way and the monolithic integrated circuit receives/sends the data flow, needs to pass through 2 serial buffers SBUF in this flow to carry on. The timer/counter has four work ways, its work way choice and control all by two special functions registers (TMOD and TCON) the content decided. In third chapter is about the VB correspondence module quotation, the attribute, the event. Fourth chapter mainly analyzes the monolithic integrated circuit from the example can correctly receive the order and PC machine which PC machine sends in correctly receives the data message which the monolithic integrated circuit sends. Key words:The monolithic integrated circuit, VB, the correspondence controls. 目 录 前言………………