摘要: 当今社会，科学与艺术飞速发展，音乐早已完美的融入了我们的生活中无法分离，人们无法想象离开了音乐，生活会变成什么样。作为精神娱乐，我们会下意识的选择音乐而不是其他东西。我的毕业设计是一个利用STC89C51单片机来实现的的简单的电子琴。我对于一个电子琴在怎样实现功能，比如说如何选择音色，控制声音强弱，实现节拍器和自动放音等等十分好奇。

电子琴是普通按键乐器的一个分支，它是电子技术与美妙音乐的相结合的产物。早在60年代，人们就已经制造出电子琴，到了现在，它已经在音乐中扮演了非常重要的角色。而现在，单片机因为具有编程实现灵活，控制功能强大，价格便宜的特点，在人们往往忽略的情况下，融入现代人们生活的方方面面，起到了不可替代的作用。由此利用单片机自己DIY电子琴也变成了比较简单的事。接下来的主要讲就是如何以51单片机为设计中心，来制作运行出一个简单的电子琴。以51单片机为主体，并辅以LCD灯，喇叭，键盘等模块，让其稳定运行。这个设计的优点在于可靠的控制系统，完善的软件功能，简单的硬件电路和较高的性价比，具有相当的参考性。81295

上面也说过，依托高速发展的电子行业，单片机在人们往往忽略的情况下，融入现代人们生活的方方面面，当然我的这个简单“娱乐”项目也托付于此。在灯光的闪烁下随意弹奏音乐，就是我想利用stc89c51设计的电子琴能实现的功能。这个简单的声光电子琴的设计是完全依托于stc89c51的研究理解和思考之下的，接下来我就会仔细讲讲关于设计电路，程序编程和动手焊接的事。

毕业论文关键词：89c51单片机 电路 程序 电子琴 

Design of Acoustic and Optoelectronic Keyboard Based on 51 Single Chip Microcomputer

Abstract:Now,the rapid development of science and art, music has long been perfect into our lives can not be separated, people can not imagine leaving the music, life will become what。 As a spiritual entertainment, we will subconsciously choose music rather than other things。 My graduation design is a simple use of STC89C51 single-chip to achieve the keyboard。 I am very curious about how a keyboard performs a function, such as how to choose a sound, control the sound intensity, achieve a metronome, and automatically play。

The organ is a branch of ordinary key instruments, it is the combination of electronic technology and wonderful music products。 As early as the 1960s, people have already created the keyboard, to now, it has played a very important role in music。 Now, because of the programming to achieve flexible, powerful control, cheap features, people often overlooked in the case, into the modern people's lives in all aspects, played an irreplaceable role。 The use of single-chip DIY DIY keyboard itself has become a relatively simple thing。 The next major is how to 51 single-chip design center, to produce a simple operation of the keyboard。 To 51 single-chip as the main body, and supplemented by LCD lights, speakers, keyboard and other modules, so that stable operation。 The advantage of this design is the reliable control system, perfect software features, simple hardware circuits and high cost performance, with considerable reference。

The above also said, relying on the rapid development of the electronics industry, SCM in people often overlooked circumstances, into the modern people's lives in all aspects, of course, my simple "entertainment" project also entrusted to this。 In the light of the flashing free playing music, that is, I would like to use stc89c51 design of the keyboard can achieve the function。 This simple sound and sound of the keyboard design is entirely dependent on the study of stc89c51 understanding and thinking, then I will talk about the design circuit, programming and hands-on welding。