2010电子信息工程毕业论文设计-基于at89c51单片机的音乐盒设计

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1、本科学生毕业论文（设计）题目基于AT89C51单片机的音乐盒设计系别电子信息系专业电子信息工程学生姓名倪方胜学号0771060指导教师张辉职称助教论文字数8800完成日期2010年12月29日论文题目基于AT89C51的单片机的音乐盒的设计作者：倪方胜、系别：电子信息系摘要：为了实现单片机控制音乐播放，此次课程设计做出了尝试，即电子音乐盒的设计。本设计采用了扬声器发声来实现歌曲的播放，能保持基本音调不变，流畅播放出歌曲。现选用AT89C51单片机。用PROTEUS单片机仿真软件仿真。利用I/O口产生一定

2、频率的方波，驱动蜂鸣器，发出不同的音调，从而演奏乐曲。通过单片机P1口控制，实现功能键盘控制；功能键盘采用按键开关，通过单片机P2口控制，实现歌曲播放顺序的调换和暂停播放功能；扬声器由单片机的P3口控制，实现歌曲播放；主要工作过程是通过按下功能键实现上一首和下一首及暂停播放，同时有液晶屏显示当前播放歌曲的序号，扬声器播放出音乐。关键词：AT89C51单片机;方波;音调英文题目ThedesignofmusicboxbaseonAT89C51作者:NiFangsheng、系别：DepartmentOfEle

3、ctronicInformationAbstract：Inordertoachievesingle-chipmicrocomputertocontrolmusicplayer,Imadetheprojecttotry,thatis,thedesignofelectronicmusicbox.Iusedtoachieveaudiblespeakersongstoplay,tomaintainthesamebasictone,smoothplaybackofsongs.Single-chipAT89C51i

4、soptional.withsimulationsoftwarePROTEUSsingle-chipsimulation.TheuseofI/OIhaveacertainfrequencysquarewavetodrivethespeaker,theissueofdifferenttones,whichplaymusic.throughtheP1portsingle-chipcontrolfunctions;functionsusingthekeyboardbuttonswitches,single-c

5、hipP2throughpopulationcontrol,toachievethechangetheorderofsongstoplayandpausefunctions;buzzP3iscontrolledbyMCUportcontrol,therealizationofmusicplayback.Themainprocessistoachievebypressingfunctionkeysonthefirstoneandthenext,andsuspensionofplay,whiletheLCD

6、theserialnumberofthecurrentlyplayingsong,themusicplayerspeaker.Keywords：AT89C51microcontroller;square;tone目录摘要···································································ⅡAbstract······························································Ⅱ1绪论··

7、······················································51.1历史背景··················································51.2目的意义··················································51.3主要问题··················································51.4技术要求··················

8、································52设计方案简述···············································52.1设计功能要求··············································52.2总体设计原理··············································52.3总体设计框图·············