LED动态扫描显示接口及程序设计与实现毕设论文.doc

摘 要 LED（Light Emitting Diode）行业成为一个快速发展的新兴产业， 市场空间，前景广阔。本文介绍了基于单片机的LED设计。 其中 着重介绍了LED的硬件设计思路、硬件电路各个部分的功能及原 理、相应软件的程序设计，以及详细的使用说明和工作流程。LED数码管是利用7个LED（发光二极管）外加一个小数点的LED组合而成的显示设备. LED可以显示0~9等10个数字和小数点, 通常用来显示时间、速度、系统状态 本文分为部分， 其中主要内容是系统,硬件设计软件设计三部分。系统是基础；设计是本文的及 核心部分，该部分首先简单描述系统硬件工作原理，且附以设计框图，论述了本次毕业设计所应用的各硬件接口技术和各个接口模块的功能及工作过程。 本文撰写的主导思想是、件相结合，以硬件为基础，来进行各功能模块的设计。本设计实用性强、操作简单、扩展功能强。 关键词: LED数码管 STC89C52 动态扫描 ABSTRACT LED (Light Emitting Diode) industry has now become a fast-growing emerging industry. The market has big and broad prospects. Based on STC89C52 microcontroller, this article describes the LED Dynamic scan display and interface design. Its focus is on the LED dynamic scanning hardware design ideas, features and principles of the various parts of the hardware circuit, and the corresponding software programming, as well as detailed instructions for use and work progress. As a new display, LED digital tube is one display device combined by seven LED (light emitting diode) and the decimal point LED. LED digital tube can be displayed 0 to 9 total 10 digits and decimal points, Usually it’s used to display time, speed and system state widely. This article is divided into five parts. Overall system analysis, system hardware design, system software design are the three main parts. The overall system analysis is the foundation. The system hardware design is the key and core part of this article. Firstly it gives us a brief description about the work principle of the hardware and the hardware system design diagram, It describes the whole function and the work progress for the entire hardware interface and the interface module which apply to this graduation design. The lead ideology for this article is the combination of software and hardware. All the design of each functional module is based on the hardware. This design is practical, simple operation, and strong extensions. Keywords: Light Emitting Diode STC89C52 dynamic scanning 目录 第一章 绪 论 1