LED点阵广告牌系统设计(j精品论文 ).docVIP

论文题目： 摘要  本文介绍了一种基于单片机的系统，系统是AT89S51单片机。本文分别从硬件和软件实现给予详尽的描述。硬件部分由、模块以及组成；软件部分采用简单流通性强的C语言编程此系统是基于AT89S5单片机的控制，采用这种方法设计的 【关键词】AT89S5单片机；；【论文类型】 Title: LED Dot billboards System design Major: Electronic and Information Engineering Name: LiYa Signature: Supervisor: Zhang Xiao Li Signature: ABSTRACT With the LED technology matures, many fields of automotive, advertising, and daily life can be seen the figure of the LED dot matrix display. At present, high-brightness LEDs can produce red, green and blue light and can form a large monochromethe two-color and color LED display. The common application is the image of text display and weather forecasts. In addition the prevalence of the use of LED display advertising signs. Therefore, the LED has a wide application in various fields. This article describes a microcontroller-based LED dot matrix billboard system and the AT89S51 microcontroller is the core of Chinese characters of LED dot matrix display system The article give a detailed description separately from the hardware design and software. The hardware part is made of the line driver module, the column driver module and LED dot matrix display module and software part simple liquidity of the C programming language. So can present a different display mode , a variety of dot matrix characters display and different space system is controlled by AT89S51 microcontroller. The LED dot matrix display system using this method designed is low-cost and easy to implement. 【Key words】AT89S5Single-chip microcomputer(SCM); LED Dot matrix characters 【Type of Thesis】Applied type 目 录 1 绪论 1 1.1 LED点阵汉字显示系统背景 1 1.2 LED点阵汉字显示系统概述 2 2 LED点阵汉字显示系统总体方案设计 3 2.1移位寄存器74HC595控制列（方案一） 3 2.2 译码器74HC154控制列（方案二） 4 3 系统硬件电路设计 5 3.1芯片选择 5 1）MCS-51单片机 5 2）16×64LED点阵显示 8 3.2 LED点阵汉字PROTUES仿真原理 10 3.2.1 8×8LED点阵构成16×16LED点阵 10 3.2.2 LED点阵显示系统的protues仿真 11 3.2.3LED点阵系统显示仿真结果 12 3.3 LED点阵显示系统硬件电路设计