文档介绍：摘要
LED点阵显示屏作为一种新兴的显示器件,是由多个独立的LED发光二极管封装而成. LED点阵显示屏可以显示数字或符号, 通常用来显示时间、速度、系统状态等。
本设计是4个16×16点阵LED电子显示屏的设计。整机以美国ATMEL公司生产的40脚单片机AT89C51为核心,介绍了以它为控制系统的LED点阵电子显示屏的动态设计和开发过程。通过该芯片控制一个行驱动器74LS154和八个列驱动器74HC595来驱动显示屏显示。该电子显示屏可以显示各种文字或单色图像,全屏能显示4个汉字,采用16块8 x 8点阵LED显示模块来组成4个16x16点阵显示模式。显示采用动态显示,使得图形或文字能够实现静止、移入移出等多种显示方式。文中详细介绍了LED点阵显示的硬件设计思路、硬件电路各个部分的功能及原理、相应软件的程序设计,以及使用说明等。
关键词:AT89C51单片机 LED 点阵显示动态显示
Abstract
As a popular display ponent, LED dot-matrix display board consists of several independent LED (Light Emitting Diode). The LED dot-matrix display board can display the number or sign, and it is usually used to show time, speed, the state of system etc.
This design is 4 16 ×16 lattice LED electron display monitor whole equipment is with the 40-pin AT89C51 MCU (Micro Controller Unit) produced by the American pany at the core, introduced take it as the control system LED lattice electron display monitor dynamic design and the development process. Controls good driver 74LS154 andeight row driver 74HC595 through this chip actuates the display monitor demonstration. The electronic screen can show all kinds of written or monochrome images, one full screen display Chinese characters,sixteen pieces of 8 x 8 dot-matrix LED display modules to form the 16x16 dot matrix display mode. Show dynamic show that makes static graphic or text can be achieved, shifted out of various formats. This paper describes the hardware design of the LED dot matrix display, and the principle function of the various parts of the circuit, the corresponding software program design and the use of some such.
Key words:AT89C51 Micro Controller Unit;LED;LatticeDisplay;DynamicDisplay
目录
第一章绪论 1
1
2
第二章功能要求及方案论证 4
4
4
6
第三章系统硬件电路的设计 8
8
10
12
15
第四章系统程序的设计 17
17
19
第五章调试及性能分析 23
23
理论性能分析 23
系统调试 24
第六章总结 27
工作过程介绍 27
参考文献 27
第一章绪论