基于51单片机的液晶显示器设计

论文编号:JD548 附外文翻译,开题报告,实习报告,原理图,论文字数:19310,页数:44

摘要
因为汉字本身的特点，显示汉字始终是计算机在我国应用普及的一个障碍。随着单片机和显示技术的发展，加上人们不满足单片机系统采用LED数码管的简单显示，利用单片机控制液晶显示成为当前显示系统的主流。本文主要介绍了采用键盘为输入设备，8051单片机为控制设备，液晶显示器为显示设备。实现的一个可以显示数字、字符和动态显示汉字的液晶显示器设备。通过键盘输入显示数据和汉字显示程序的地址，接着运行相应的程序取汉字的机内码和西文字符的ASCII码，并在存储器中进行寻址找出相对应的显示代码或汉字字模，提取后作为点阵显示信息送液晶显示器显示。利用液晶显示器显示汉字操作灵活，汉字显示效果可以大大提高。

关键词  液晶显示 机内码  键盘  点阵显示 

Title   Design of LCD Based on the 51 Series Single-chip Microcomputer                                

Abstract
Because of the nature of Chinese characters, showing Chinese in computer are always obstacles in our universal application of computer in China. With the development of MCU and display technology, furthermore, people are not satisfied with SCM system useing LED as display section, SCM control LCD display system now become the mainstream. This paper describes the use of the keyboard as input device, the 8051 microcontroller as the control equipment, LCD as display equipment. Make a LCD equipment that can shows number、characters、and dynamic display of Chinese characters .Through the keyboard input the display program addresses of Chinese characters displaying and display data.Then operating corresponding procedures and take the Chinese characters machine-code and Western ASCII characters out, then addressable memory for identifying the corresponding shown code Fonts or Chinese characters modes, extracted as a dot-matrix display information sent LCD shows. Use LCD display Chinese characters have flexible operation, results showed that effecting of display Chinese characters can be greatly improved.

Keywords   LCD machine-code Keyboard dot-matrix display

目   录

1 绪论 …………………………………………………………………………………… 1
1.1 研究背景 ……………………………………………………………………………1
1.2 国内外发展状况 …………………………………………………………………… 2
2 液晶显示器原理 ……………………………………………………………………4
2.1显示原理 ……………………………………………………………4
2．2 单片机控制……………………………………………………………………………5
3 系统总体设计……………………………………………………………………………6
3.1系统设计原则 ………………………………………………………………6
3.2 系统总体结构设计 ………………………………………………………7
3.3 工作过程 ……………………………………………………………………7
4 系统各部件 ……………………………………………………………… 8
4.1键盘  ………………………………………………………………… 8
4.2 单片机 ………………………………………………………………………… 13
4.3 存储器扩展…………………………………………………………………………17
4.4 显示部分……………………………………………………………………………21
4.5系统硬件抗干扰 ……………………………………………………………………26
4.6 复位及看门狗电路…………………………………………………………………27
5 系统程序设计…………………………………………………………………………30
结论 …………………………………………………………………………………… 34
致谢 …………………………………………………………………………………… 35
参考文献 ……………………………………………………………………………… 36
附录A ………………………………………………………………………………… 38
附录 B  …………………………………………………………………………………45