摘要:本文针对传统开发板多数采用汇编语言，不方便供大家学习与研究的问题，设计了一个可供学习与开发系统于一体的51单片机综合开发系统。该开发板具有成本低、体积小、可靠性高、功能齐全、低功耗设计、操作方便等特点。开发板以AT89C51单片机为核心控制器，开发板可以作为主控制模块安装于控制系统中执行控制任务，也可以用作实验板，完成单片机各类通用实验，操作简单，控制结果可见，性价比高，可以应用于高校、科研院所的实验室等场合，具有一定的实用价值和现实意义。66632

毕业论文关键词：实验开发板，51单片机，高性能

Abstract: Based on traditional development board majority USES the assembly language, is not easy for everybody to learn and research questions, designed a system for learning and development in one of the 51 single-chip integrated development system. The development board has low cost, small volume, high reliability and complete function, low power design, convenient operation, etc. Development board with AT89C51 single-chip microcomputer as the core controller, development board can be installed as the main control module in the control system of executive control tasks, also can be used as the experimental board, complete microcontroller all kinds of general experiment, the operation is simple, the control results can be seen, cost-effective, can be used in colleges and universities, research institutes laboratory, etc, has certain practical value and practical significance.

Keywords: The experimental development board, 51 single-chip microcomputer and high performance

目录

1 引言 4

1.1 单片机的发展现状 4

1.2 实验开发板的现状与发展 4

1.3 AT89C51在实验板中的应用 5

1.4 课题的背景与意义 5

2 开发板总体设计 6

2.1 开发板系统功能 6

2.2 开发板的性能要求 6

2.3 硬件总体设计 6

3开发板的模块电路设计 7

3.1 AT89C51单片机 7

3.2 单片机外围电路 9

3.3 独立键盘电路 10

3.4 10位AD转换电路 11

3.5 电源电路 12

3.6 液晶显示电路 13

3.7 串行通信电路 14

3.8 I/O口扩展电路 15

４电路PCB的制作 16

4.1电路原理图设计 16

4.2 PCB电路板元件布局与走线设计 16

4.3 PCB板整体设计 17

4.4 PCB板具体参数设置的依据 18

结  论 19

参考文献 20

致  谢 21

附  录1 22

系统原理图 22

附录2 27

1 按键控制LED程序 27

2 LCD显示电路