学位论文-—基于单片机的单色led的点阵控制程序.docVIP

基于的单色―LED显示系统研究 学 生： 指导老师： 摘 要 16点阵LED电子显示屏的设计。分别阐述了显示屏显示的基本原理，硬件设计、控制方法及其程序的实现。经过调试和分析，设计的结果能够实现对汉字的静态和动态显示，动态显示的内容有多种方式，同时又可通过上位机更新显示的内容。 关键词：Microcontroller-based monochrome dot matrix LED control program-LED Display System????????????????????????????????????????????????????? Student: Chan Wing Instructor: Li Xiuzhi Abstract LED electronic display module is the use of light-emitting diode dot or pixel unit consisting of flat display screens. He has a high luminous efficiency, long life, flexible configuration, rich colors and strong ability to adapt to indoor and outdoor environmental advantages. And is widely used in public transport vehicles, terminals, shops, schools and banks and other public places for publishing and advertising information. Since the beginning of the 1980s, LED electronic display applications have been all over the transport, telecommunications, education, advertising and other areas. The rapid development of LED electronic display, which in terms of cost and social aspects such as generation has its own unique advantages.This paper introduces the 1616-based microcontroller STC89C51 dot matrix LED electronic display design. The basic principles were displayed on the screen, hardware design, control method and its implementation program. After debugging and analysis, the results of the design can be achieved for both static and dynamic display of Chinese characters, the contents of the dynamic display of a variety of ways, but the content can be updated through the PC display.Keywords: STC89C51 16 × 16 dot matrix LED 74LS154 74LS595 目录 第一章绪论 5 1.1论文的背景和意义 5 1.2 LED显示对于未来的意义和发展 5 1.3 LED显示的组成 6 2系统方案论证 7 2.1 LED驱动显示方案 7 2.2 数据传输的显示方案 8 2.3 系统整体方案框图 9 3系统硬件电路设计 9 3.1 单片机系统及其外围电路 9 3.2 行驱动电路 9 3.3 列驱动电路 9 3.4 74LS154芯片介绍 10 3.5 74LS595芯片介绍 11 3.6单片机STC89C51介绍 12 3.7单片机STC89C51引脚以及相关参数 13 4系统软件设计 13 4.1系统软件的