基于单片机的点阵滚屏显示器的设计摘要LED是英文lightemittingdiode（发光二极管）的缩写。由镓（Ga）与砷（As）、磷（P）、氮（N）、铟（In）的化合物制成的二极管，当电子与空穴复合时能辐射出可见光，因而可以用来制成发光二极管。在电路及仪器中作为指示灯，或者组成文字或数字显示。并且不同的元素化合形成的二极管会发出不同颜色的可见光。LED行业发展迅速并已成为一个具有一定规模的新兴产业，而且从总体上来看，宏观环境也非常有利于LED行业的发展，可以说LED行业前景广阔，市场潜力巨大。本设计实现了基于单片机AT89C51的16×64LED点阵的图形的滚动显示。本文主要介绍了LED点阵显示的硬件电路的设计思路以及各个部分的功能及原理和相应程序设计的设计思路和功能。该设计使用取模软件对所要显示的图形进行取模，采用C语言编写其显示程序，利用KeilC集成开发平台生成HEX文件，在Proteus中对硬件电路的时钟、复位、驱动、16×64点阵进行设计并通过译码器等与AT89C51芯片连接，进而对系统进行仿真调试。本设计具有使用性强，操作简单易实现等优点。关键词单片机；二极管；LED点阵；图形显示；硬件电路AbstractTheLEDislightemittingdiode.Diodeismadeofgallium(Ga)andarsenic(As),phosphorus(P)andnitrogen(N),indium(In)elements,whenelectronsandholesintegratecanradiatelight,thusitcanbeusedtomakelightemittingdiode.Inthecircuitandequipmentitactaslight,ordisplaythewordsorfigures.Andifthediodehasdifferentelementsitwillemitsdifferentcolorsofvisiblelight.LEDindustryhasdevelopedrapidlyandhasbecameanewindustrywhichhasacertainscale,andonthewhole,macroenvironmentisbeneficialtotheLEDindustrydevelop,sotheLEDindustryhasprospect,hugemarketpotential.Thisdesignhasrealizedscrollofgraphicson16x64LEDwhichbasedonAT89C51.ThisarticlemainlyintroducedthehefunctionandprincipleofhardwarecircuitofLEDdotmatrixdisplay,eachpartandthedesignideaandfunctionofcorrespondingprogramming.Thisdesignusingthemodulussoftwaretogetthemodelofgraphics,usingClanguagetowritethedisplayprogram,HEXfilegeneratedbyKeilCintegrateddevelopmentplatform.Theclock,reset,drives,16×64LEDdotmatrixofhardwarecircuitwillbedesignedandconnectwithAT89C51intheProteus,andthendosystemsimulationanddebugging.Thisdesignhastheadvantageofusabilityisstrong,easytorealizeoperationetc.KEYWORDSSinglechipmicrocomputer；Diode；LEDdotmatrix；Graphicdisplay；Hardwarecircuit目录摘要..............................................................1ABSTRACT............................................................2第1章绪论.........................................................11.1课题背景及意义...................................................................................................................11.1.1LED显示屏发展背景以及国内外现状....................................11.1.3LED显示屏的应用领域................................................21.2论文的主要内容...................................................................................................................3第2章系统的硬件部分设计...........................................32.1设计基本方案.......................................................................................................................32.2硬件电路芯片介绍...............................................................................................................42.2.1单片机的发展过程....................................................42.2.2AT89C51芯片的简要介绍..............................................52.2.3复位电路............................................................72.2.5驱动电路.........
