基于AT89S52的玩具电子琴设计摘要：随着电子技术的发展，数字系统正朝着速度快、容量大、体积重量轻的方向发展。在其推动下，现代电子产品几乎渗透了社会的各个领域，有力地推动了社会生产力的发展和社会信息化程度的提高，同时也使现代电子产品性能进一步提高，产品更新换代的节奏也越来越快。其中尤其单片机技术的不断发展，使得单片机在日用生活用品中的应用越来越广泛。本文利用AT89S52单片机，设计了一种玩具电子琴，该电子琴除了可以演奏1-8八个音符以外，还可以自动播放两首歌曲，是单片机的又一扩展应用。本文详细介绍了电子琴的工作原理及硬件软件设计，并制作了实物，测试结果显示，系统运行良好。关键词：单片机蜂鸣器音乐Abstract:Withthedevelopmentofelectronictechnology,digitalsystemismovingfast,largecapacity,thevolumeandtheweightofthelightdirection.Underitsimpetus,themodernelectronicproductspenetratedalmosteveryfieldofthesociety,astrongimpetustothedevelopmentofsocialproductivityandtheimprovementofsocialinformation-baseddegree,simultaneouslyalsomakesthemodernelectronicproductstofurtherimprovetheperformance,productupgradingareincreasinglyfastpace.Developmentespeciallycomputertechnology,themicrocomputerapplicationsindailylifesuppliesmoreandmorewidelyinthe.Inthispaper,usingAT89S52microcontroller,designatoyelectronicorgan,theorgan,inadditiontoplayingeightnotes,canalsoautomaticallyplaytwosongs,isanextendedapplicationofmcu.Thispaperintroducestheworkingprincipleandhardwareandsoftwaredesignoftheelectronicorgan,andcreateaphysical,testresultsshowthat,thesystemrunswellKeyword:MCUbuzzermusic目录第1章绪论··························11.1概述···························11.2研究内容·······················31.3理论基础·······················5第2章硬件设计························12.1方案论证及系统设计····················12.2系统硬件分析·······················12.2.1单片机小系统····················252.2.2供电模块······················25第3章软件设计························13.1KEIL软件介绍·······················13.2系统流程························13.2.1系统主流程···················253.2.2中断初始化流程·················25第4章仿真测试························254.1PROTEUS软件介绍···················254.2系统主要仿真图·····················254.3测试·························25致谢·····························59参考文献···························60附录代码···························63(章的名称、结论、参考文献、致谢及附录小4号黑体，其余小4号宋体)第1章绪论1.1概述目前单片机的应用渗透到我们生活的各个领域，几乎很难找到哪个领域没有单片机的踪迹。导弹的导航装置、飞机上各种仪表的控制、计算机的网络通讯与数据传输、工业自动化过程的实时控制和数据处理、广泛使用的各种智能IC卡、民用豪华轿车的安全保障系统、录像机、摄像机、全自动洗衣机的控制、以及程控玩具、电子宠物等等，这些都离不开单片机。更不用说自动控制领域的机器人、智能仪表、医疗器械了。我们所熟知的是单片机在测试控制领域中的广泛应用，但是除了这些之外，单片机还有一些有趣的应用。比如，使用单片机可以驱动蜂鸣器或者扬声器发出声音并...
