基于单片机的电子琴毕业论文设计.doc

摘要 我们知道在工业、科技日新月异的这个时代，对我们来说掌握一门必要的技术是多么的重要，它能帮助我们在这个社会上更具有竞争力。而对于工业来说，正面向智能化、集成化、小型化的方向转变，这不仅给技术带来了挑战，而且带来了工艺的革命。同时也使我们学会了必须紧跟科技的前沿，不断用知识来充实自己。 而在工业中起着举足轻重作用的“单片机”，自然而然是必须要学的，单片机又称微电脑，在工业中起着控制、采样、计算、工业自动化控制、自动检测、智能仪器仪表、家用电器、电力电子、机电一体化设备等重要的作用。它能按照程序进行相应的操作，能实行准时的定时、中断、计数，大大地减少了人员的工作量。同时因采用集成从而使得单片机具有的体积小、重量轻、功能强等特点，本设计采用AT89C51单片机为主控芯片、16矩阵式键盘为输入设备、喇叭为输出设备来组合成简单的电子琴基本框架，本电路能够实行音节与音拍的同时控制来演奏任意一首音乐，我相信在以后的应用中，随着单片机功能的不断加强，将得到更大地应用。 关键词：单片机AT89C51 ; ;16矩阵键盘 Abstract We know that in industry, science and technology of changing in this era, for us to master a foreign necessary technology is so important, it can help us in this world to more competitive. And for the industry as it is for intelligence, integration, to move in the direction of miniaturization, this not only give technical challenge, and brought the process of revolution. At the same time makes us learned must follow the leading edge of the science and technology, and constantly using knowledge to enrich himself. And in industry plays a very important role in the single chip, it is necessary to learn naturally, also called the single chip microcomputer, in the industry plays control, sampling, calculation, and other important role. It can be in accordance with the procedures for the corresponding operation, can carry out the timing, on time the interruption, counting, greatly reduce the workload of workers. At the same time because the single chip microcomputer integrated so that has small volume, light weight, the function is strong and other characteristics, the design USES AT89C51 single-chip microcomputer as the controller chip, 16 matrix for input device, horn keyboard for output devices to a combination of simple keyboard basic framework, the circuit can perform syllables and sound at the same time to control to take any music playing a song, I believe in the later application, along with the strengthening of SCM functions, will get more the earth application. Keywords: single chip microcomputer AT89