内容摘要
LED显示屏以体积小、耗电低、寿命长、高亮低热、环保、坚固等优点决定了它是最理想的光源，它有着广泛的用途，现在越来越多的地方使用LED显示屏。
本文设计的是一种停车场系统显示屏系统（下位机软件）的实现方案，编写软件采用AVR单片机C语言编程，软件通过ICCAVR环境开发，通过设计可以对显示内容进行实时控制，实现如飞入、飞出、滚动等多种动态显示效果。其显示和动态效果的实现由软件控制，该设计方法简便，且易于实现。该方案是一种采用AVR系列单片机和上位机控制的LED显示屏系统，该系统可以与PC机通讯，适用于大部分需要汉字显示的场合。
关键词
单片机；AVR；ATmega64-16AI；led；显示屏；动态显示；
ABSTRACT
The definitive reasons why LED display screen is the optimal light sources to replace traditional light sources are its advantages of intrinsic features that it’s small, low power consumption, of long life, more bright and less heat, environmentally friendly, firm and so on. With wide range of applications, LED display screen is more and more used in many fields.
This paper designed a implementation scheme of a parking lot system with LED display screen system(subordinate computer software). The software is customized with AVR SCM C language program and develops the environment as ICCAVR. Through the designment, we can contral the content displayed in real time, achieving flying into, flying out, scrolling and other dynamic effects. The displaying and dynamic effects are controlled by the software. This method is very simple and realizable. This project is a LED display screen system controlled by the supervisory computer and AVR series SCM. This system can communicate with the PC. It applies to most of the occasions which Chinese is needed to display.
KEY WORDS
SCM; ATmega64-16AI; Parks; Display; Dynamic Scan
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