16×16-LED点阵设计-毕业设计.doc

16×16 LED点阵设计 同学： 指导老师： 内容摘要：LED点阵电子显示屏的进展越来越好广泛，它成为一个宣扬信息的重要平台，已经得到了社会的普遍认同。LED点阵显示屏是利用发光二极管点阵模块或像素单元组成的平面式显示屏幕。它具有发光效率高、使用寿命长、组态机敏、颜色丰富以及对室内外环境适应力量强等优点。 该设计是一个16×16LED点阵电子显示屏显示数字的设计。整块电子显示屏的把握核心是40引脚的单片机AT89S51，说明白LED点阵电子显示屏用AT89S51为把握系统的动态的设计和开发的具体过程。通过该芯片把握两个列驱动器74HC595来驱动显示屏显示，本设计就是使用4块8×8点阵显示模块来组成16×16点阵显示屏，接受动态扫描显示，程序编写的实现是使用简洁流通性强的C语言，该设计的结果证明，系统显示清楚，结构合理，误差小，扩展力量强，性能稳定。 关键词：AT89S51 LED点阵 数字显示 Design of 16*16 LED dot matrix Abstract：LED electronic display found the screen better and better.It has become an important platform of a promotional information,it has been widely accepted by the society,LED dot matrix display is the use of plane composition LED lattice module or pixel unit display screen ,It has the advantages of high light efficiency ,long. The designed is a digital design of a 16*16 LED dot matrix display ,control the core piece of electronic display is the 40 pin of the microcontroller AT89S51.Describes the specific process of the design and development of LED dot matrix display with AT89S51 as the control system dynamic.Through the control two columns drive chip 74HC595 are needed to drive the display shows that this design is to use 4 pieces of 8 x 8 dot matrix display module to form a 16 * 16 dot matrix display screen, a dynamic scans showed that the realization of the programming is simple to use strong liquidity of C language, and the design results show that the system shows clear, reasonable structure, little error and extension ability strong, stable performance. Keywords: AT89C51 dot matrix LED the digital display screen 目 录 TOC \o 1-3 \h \u 前言 1 1 设计方案的论证与选择 1 2 硬件电路设计 3 2.1 系统的结构框图 3 2.1.1 单片机把握模块 3 2.1.2 时钟电路 4 2.1.3 复位电路 4 2.1.4 显示模块 5 2.1.5 驱动模块 7 2.2 单片机的最小系统图 9 3 单片机系统 10 3.1 8051引脚为40个的单片机芯片 11 3.1.1 引脚为Vcc和Vss 的主电源 11 3.1.2 外接晶体引脚XTAL1和XTAL2 11 3.2 I/O口线的引脚排列及管脚的说明 11 3.3 RST键 13 3.4 PEROM阵列和锁定位 13 4 系统软件设计 13 4.1 主程序的设计及