基于单片机的简易电子琴设计

湖南文理学院课程设计报告课程名称：单片机课程设计专业班级：自动化10102班17号学生姓名：肖葵指导教师：王南兰完成时间：2013年6月13日报告成绩：湖南文理学院制评阅意见：评阅教师日期2013.6.20I摘要随着社会的发展进步，音乐逐渐成为人们生活中很重要的一部分，有人曾说喜欢音乐的人不会向恶。我们都会抽空欣赏世界名曲，作为对精神的洗礼。本论文设计一个基于单片机的简易电子琴。人们对于电子琴如何实现其功能，如音色选择、声音强弱控制、节拍器、自动放音功能等等也很好奇。电子琴是现代电子科技与音乐结合的产物，是一种新型的键盘乐器。它在现代音乐扮演着重要的角色，单片机具有强大的控制功能和灵活的编程实现特性，它已经溶入现代人们的生活中，成为不可替代的一部分。本文的主要内容是用AT89S52单片机为核心控制元件，设计一个电子琴。以单片机作为主控核心，与键盘、扬声器等模块组成核心主控制模块，在主控模块上设有16个按键和扬声器。本系统运行稳定，其优点是硬件电路简单，软件功能完善，控制系统可靠，性价比较高等，具有一定的实用和参考价值。关键词：AT89S51；音色节拍器；电子琴IIABSTRACTWiththedevelopmentofoursociety,musichasbecomeanimportantpartoflife.There’sasayinggoesthatpeoplewholikesmusiccannotbeanevil.Duringourlife,weoftenenjoyallkindsofmusicintheworldtobaptizeourspirits.Thisthesishasdesignedasimplemicrocontroller-basedelectronickeyboard.Wearecuriousaboutthefoundationofelectronickeyboard,suchasthechoiceoftimber,thecontrolofvolume,themetrononmeandautomaticplayback.Thekeyboardisaproductofmodernelectronictechnologycombinedwithmusic,itisanewtypeofkeyboardinstruments.Anditplaysanimportantroleinmodernmusic.Singlechiphasapowerfulcontrolfunctionsandflexibleprogrammingcharacteristics.Ithasconvergedwithmodernpeople'slives,becomeanirreplaceablepart.ThemaincontentisAT89S51controlofthecorecomponents,Designofanelectronicorgan,singlechipasahosttothecore,withthekeyboard,speakersandothercoremodulesmaincontrolmodule,inthemaincontrolmodulehas16keysandspeakers.Stabilityofthesystem,itsadvantagesaresimplehardwarecircuits,softwarefunctions,controlsystemreliability,highcostperformanceandhavecertainpracticalandreferencevalue.Keywords:singlechipMCUkeyboardspeakerelectronicorgan基于单片机的电子琴设计目录第一章设计方案分析..............................................................................................................11.1设计背景............................................................................................................................11.2设计任务...........................................................................................................................12.1总体设计............................................................................................................................1第二章电子琴总体电路图设计..............................................................................................32.1单片机最小系统................................................................................................................32.1.1AT89S52简介..........................................................................................................32.1.2时钟电路与复位电路.............................................................................................72.2显示部分设计....................................................................................................................72.2.1数码显示方式..........................................................................................................72.2.2八位数码管的结构..................................................................................................82.3按键模块设计....................................................................................................................82.3.1按键选取..................................................................................................................92.3.2键盘设计..................................................................................................................92.4发音模块设计.................................................................................................................10第三章程序设计....................................................................................................................123.1系统总体功能流程图.....................................................................................................123.2参数计算.........................................................................................................................123.3判断音阶（高中低音）子程序......................................................................................143.4播放子程序.....................................................................................................................15第四章Proteus软件仿真.....................................................................................................174.1编程环境PROTEUS.......................................................................................................174.2用PROTEUSISIS进行硬件电路绘制..........................................................................174.3下载HEX文件................................................................................................................194.4软件调试..........................................................................................................................20心得体会..................................................................................................................................22参考文献..................................................................................................................................23附录一原理图....................................................................................................