基于单片机及PC机的电子琴设计.doc

基于单片机及 PC机的电子琴设计论文 摘 要 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AT89S51 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，亦可以通过上位机进行操作，达到单片机板上按键相 同的效果。本系统运行稳定，人机界面友好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。 Abstract Electronic organ is a modern electronic music technology and the product is a new type of keyboard instruments. It played an important role in modern music. SCM has powerful control functions and flexible programming characteristics. It has converged with modern peoples lives, become an irreplaceable part. The main content is AT89S51 control of the core components, design of a electronic organ. SCM as a host to the core, with the keyboard, speaker and other core modules. In the main control module has 16 keys and a speaker. The system is steady, its simple hardware circuits, software functions, reliability of control system and high cost performance is its advantages. It also has certain practical and reference value. 1 前言...................................................................................................................................- 3 - 1.1 课题研究背景................................................................................................................- 3 - 1.2 课题的原理....................................................................................................................- 3 - 1.3 研究的目的和意义........................................................................................................- 3 - 2 系统硬件设计...................................................................................................................- 4 - 2.0 整机原理和PCB图.......................................................................................................- 4 - 2.1 51单片机电路模块框图...............................................................................................- 5 - 2.2 稳压直流电源设计.....................................