LED点阵大屏幕设计摘要现代社会中各种信息时刻的出现在人们的生活视线中，想让大家更好的，方便的获得这样的信息，LED显示屏发挥了很大的作用，包括在商场门口、公交站台、会议室、商店、售票大厅、银行等场所，各种信息都可以通过LED显示屏显示，让客户、路人、顾客更多的获取他们想要的信息。本文介绍了LED点阵汉字显示屏的设计与实现过程。文中从显示原理和显示屏驱动电路设计，到软件的全部过程都分别做了分析和阐述，并附加了明确的程序流程说明。该系统以单片机为主来控制整个系统的运行，采用动态扫描方式驱动显示屏主要包括三大部分：底层硬件的设计、硬件驱动设计、显示程序设计等。显示屏的驱动电路设计是整个系统的关键，它的质量优劣直接关系到显示的效果和系统的稳定性。如何获得最优良的显示效果，如何降低硬件借口复杂度提高系统稳定性，如何降低硬件成本等一系列问题成为设计显示屏系统的重点。关键字：LED点阵显示屏，驱动电路，接口，触发AbstractAllkindsofinformationinthemodernsocietyappearinpeople'slife,wantyoutogetbetter,convenientsuchinformation,theLEDmatrixdisplayscreenhasplayedalargeroleinthebazaar,includingpublicplatform,conferenceroom,hall,Banksstores,ticketing,etcallkindsofinformationcanbedisplayedthroughtheLED,makemorecustomers,clients,strangerfortheinformationtheywant.ThepaperintroducesthecharactersofLEDmatrixdisplayscreendesignandimplementation.Thisshowsprincipleanddisplaydrivercircuitdesign,theentireprocessofsoftwareareanalyzedandexpoundedrespectively,andthespecificprocesses.ThissystemmainlyuseMCUtocontroltheoperationofthesystem,thedynamicscanningmodedriverdisplaymainlyincludesthreeparts:thebasichardwaredesigns,hardwarebottomdrivedesign,displayprogramdesign.Thedisplaycircuitdesignisthekeyofthewholesystem,itsqualitydirectlyrelatedtothateffectandthestabilityofthesystem.Howtogetthemostexcellentdisplayeffect,howtoreducethecomplexitysystemhardwareexcuses,howtoreducethecostofstability,theseproblemsarethekeytodisplaysystemdesign.Keywords:LEDmatrix,drivingcircuit,interface,trigger目录MERGEFORMAT摘要................................................................1Abstract...........................................................2第一章绪论......................................................11.1课题背景.......................................................11.1.1课题在国内发展状况...........................................11.1.2LED显示屏的发展..............................................11.1.3单片机的应用.................................................21.2课题内容.......................................................21.3课题意义.......................................................2第二章LED显示屏系统原理.........................................32.1LED显示屏简介.................................................32.1.1LED显示屏的分类.............................................32.1.2LED显示屏技术特点...........................................42.2点阵LED扫描方法介绍...........................................52.3点阵屏原理.....................................................5第三章单片机AT89S52介绍..........................................83.1单片机的介绍...................................................83.1.1单片机简介...................................................83.1.2单片机的应用领域.............................................93.2AT89S52单片机的功能特性......................................103.3AT89S52引脚说明..............................................21第四章系统硬件电路部分.................................
