摘 要
伴随着科技的进步，LED点阵显示屏作为一种新兴的显示器件走进我们的视野，它是由多个独立的LED发光二极管封装而成。通过LED点阵显示屏可以显示数字、符号以及文字，通常用在广告，指示牌，公告牌上。 显示屏整机以40脚单片机STC89C51为核心，本文介绍了以STC89C51单片机为控制系统的LED点阵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 74HC154和两个列驱动器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图像，全屏能显示1个汉字，采用16×16点阵LED显示模块来组成16×16点阵显示屏。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。
无声鼠标单片机控制系统程序采用C语言进行编辑，通过编程控制各显示点对应LED阳极和阴极端的电平，就可以有效地控制各显示点的亮灭。所显示字符的点阵数据可以自行编写（即直接点阵画图），也可从标准字库中提取。
LED显示以其组构方式灵活、显示稳定、功耗低、寿命长、技术成熟、成本低廉等特点用于车站、证券所、运动场馆、交通干道及各种室内外显示场合的信息发布，公益宣传，环境参数实时更新，重大活动倒计时等方面。
经实践证明，该系统显示误差小，性能稳定，结构合理，扩展能力强。
软纱门关键词：STC89C51单片机； LED； 点阵显示； 动态显示
ABSTRACT
With advances in technology, LED dot matrix display as a display device into our new vision, it is more independent of the LED light emitting diode packages. LED dot matrix display can show by numbers, symbols and text, often used in advertising, signs, bulletin boards.光催化剂
土钻The whole equipment is with the 40-pin STC89C51文蛤刃 MCU (Micro Controller Unit) at the co
re, introduced take it as the control system LED lattice electron display monitor dynamic design and the development process. Controls good driver 74HC154 and two 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, four pieces of 8×8 dot-matrix LED display modules to form the 16×16 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.
SCM process control system used for editing MCU C language, Programming control points indicated by the corresponding LED anode and overcast extreme level. We can effectively control the defense showed bright spots. The lattice data shows characters can prepare themselves (that is, direct lattice Painting), which can also be extracted from the standard font.
LED display with fabric means flexibility, stability, low power consumption, long life, mature technology, low-cost features at the station, securities, sports venues, transportation corridors and various indoor / dissemination of information on foreign shows occasions, good publicity, real-time environmental parameters, etc. countdown major activities are widely used.
As the practice proves, the system possesses advantages in low shows errors, stable, rational structure and履带式陶瓷加热器 strong extensible abilities.
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