led16×16点阵汉字显示屏设计.doc

LED16×16点阵汉字显示屏设计


目  录

第一章  绪论……………………………………………………………1
第二章  任务设计………………………………………………………
2.1   设计依据……………………………………………………………40
2.2   要求及主要内容………………………………………………………
2.3   途径和方法……………………………………………………………
第三章  AT89C51单片机概述…………………………………………52
3.1   AT89C51单片机的结构……………………………………………
3.2   管脚说明………………………………………………………………60
3.3   振荡器特性……………………………………………………………
第四章 方案设计………………………………………………………66
4.1   总体设计………………………………………………………………
4.2   系统硬件选择…………………………………………………………
4.3   硬件电路实现…………………………………………………………
4.4   软件的程序实现………………………………………………………
结论…………………………………………………………71
致谢…………………………………………………………74
参考文献………………………………………………………75

LED16×16点阵汉字显示屏

摘要 :
LED点阵显示屏是利用发光二极管点阵模块或像素单元组成的平面式显示屏幕。它具有发光效率高、使用寿命长、组态灵活、色彩丰富以及对室内外环境适应能力强等优点。并广泛的应用于公交汽车，码头，商店，学校和银行等公共场合的信息发布和广告宣传。LED显示屏经历了从单色，双色图文显示屏到现在的全彩色视频显示屏的发展过程，自20世纪八十年代开始，LED显示屏的应用领域已经遍布交通、电信、教育、证券、广告宣传等各方面。
LED点阵显示屏可以显示数字或符号，通常用来显示时间、速度、系统状态等。文章给出了一种基于MCS-51单片机的16×16 点阵LED显示屏的设计方案。包括系统具体的硬件设计方案,软件流程图和部分C语言程序等方面。在负载范围内, 只需通过简单的级联就可以对显示屏进行扩展,是一种成本低廉的图文显示方案。
本设计主要以AT89C51单片机为核心，采用串行传输、动态扫描技术，制作一款拥有显示汉字的模块化LED多功能显示屏。

关键词：MCS-51   LED   16×16点阵

LED16 x 16 bitmap characters display screen
Abstract  Destem is using light emitting diode matrix modules or pixel unit composed of a flat display screen. It has high luminous efficiency, long service life, configure, flexible, colour is rich and for indoor and outdoor environment adaptiveness, etc. And widely used in transit buses, wharf, stores, schools and bank, public information release and advertising. The LED display experienced from monochrome, double-color graphic display to now full-color video display the development process, since the 1980s began, LED display applications has already spread transportation, telecommunication, education, securities, advertising, etc.

Destem can display Numbers, or symbols, usually to show time, speed, the system state, etc. The paper gives a method based on MCS - 51 SCM 16 x 16 lattice LED display design scheme. Including the system design scheme of concrete hardware and software flow chart and part C language program, etc. In load range, only through simple cascade can expand on screen, is a low-cost graphic display solutions.

This design mainly AT89C51, using a serial transmission, dynamic scanning techniques, making a paragraph of modularization LED display characters with multi-function screen.

Key words  MCS - 51   LED   16 x 16 bitmap