基于单片机实现1616LED显示屏控制电路设计

基于单片机实现16*16LED显示屏控制电路设计学生姓名：学生学号：院（系）：电气信息工程学院年级专业：指导教师：助理指导教师：二〇一五年五月I摘要LED点阵显示屏作为一种新兴的显示器件,是由多个独立的LED发光二极管封装而成。LED点阵显示屏可显示数字或符号,一般用来显示汉字、时间、速度、系统状态等。由于单片机的不断发展和高亮度LED发光管的出现使得大屏幕高亮度LED显示屏成为可能，与传统的霓虹灯广告在显示效果及可修改性上都有着无法比拟的优势，而且单片机的慢慢普及以及LED技术的不断创造格新，使得高清晰高亮度的LED点阵显示屏与传统霓虹灯显示屏的成本日益接近。为了能简单的实现基于单片机的LED显示系统控制，本文设计了基于STC89C52单片机单片机16×16LED汉字滚动显示屏电路以及运用Proteus软件仿真实现其显示功能。本系统的设计具有体积小、硬件少、电路结构简单及容易实现等优点。关键词：LED，STC89C52单片机，Proteus仿真IIABSTRACTAsanewdisplaydeviceLEDdotmatrixdisplayisconsistsofseveralindependentLEDlight-emittingdiodeencapsulation.LEDdotmatrixdisplaycandisplaynumbersorsymbols,alwaysusedtodisplaytime,speedandsystemstatus,etc.Asthecontinuousdevelopmentofmicrocomputertechnologyandthedisplayofhigh-brightnessLEDglowingtube,Itmakestheemergenceoflarge-screenhigh-brightnessLEDelectronicadvertisingscreentobepossible,comparedtothedisplayeffectandmodifiabilityofThetraditionalneonadvertisingithasincomparableadvantageandthegrowingSCMCivilianandinnovativeLEDtechnologymakesthebrightnessandhighdefinitionofLEDdotmatrixbillboardsandneonsignsofthecostoftraditionalincreasinglyclose.Inordertoachievethe16×16LEDchinesescrollscreenandusingtheProteussoftwaresimulationshowsthefunction.Thedesignofthescreenissmall,lesshardware,simplecircuitstructureandeasytoimplement.Keyword:LED,STC89C52MCU,Proteusimitatesreal1目录摘要.......................................................................IABSTRACT....................................................................II1绪论.......................................................................11.1本课题研究的意义.....................................................11.2国内外研究现状和水平.................................................11.2.1国外发展情况...................................................11.2.2国内发展情况...................................................21.3LED显示屏的发展趋势.................................................22系统总体设计方案...........................................................42.1方案选择.............................................................42.2设计任务.............................................................52.3本设计的方框图.......................................................52.4本设计的创新点.......................................................52.5本设计实现的软件.....................................................53系统的硬件设计.............................................................63.1单片机的选择与其性能分析.............................................63.1.1单片机概述.....................................................63.1.2单片机STC89C52的介绍..........................................63.1.3单片机最小系统的介绍...........................................83.274HC573简介........................................................103.3点阵显示电路........................................................113.4驱动电路............................................................134软件设计..................................................................154.1软件系统分析........................................................154.1.1模块细分......................................................154.1.2编写程序......................................................154.2系统主程序..........................................................164.3显示驱动程序........................................................175仿真设计与结果分析........................................................185.1仿真软件的简介......................................................185.1.1仿真软件Proteus的简介........................................185.1.2keiluVision4编程开发工具的简介..............................185.2本系统的Proteus仿真设计............................................235.3创建源代码仿真文件..................................................255.4仿真调试............................................................266PCB的制作................................................................286.1PCB简介............................................................286.2PCB的发展历史......................................................286.3原理图的设计........................................................2926.4制作PCB............................................................296.5焊接PCB板..........................................................327组装与调试................................................................347.1电路组装............................................................347.2硬件调试............................................................347.3单片机程序烧录......................................................35结论..............................................................................................................................................37参考文献..................................................................................................................................38附录A：源程序代码.....................................................................................................................39附录B：实物演示.........................................................................................................................46附录C：仿真图.........................................................................................................................