本文主要介绍了一种基于PC机控制的以单片机AT89S52为核心的LED显示系统。用户可以根据需要把要显示的内容通过本系统所配带的PC机软件，直接重计算机下载到LED显示系统，同时可以设置显示系统显示的颜色、显示内容的移动方式、移动速度等。本系统主要应用于厅堂、车站、广场等公共场所；并详细介绍了在硬件上和软件-This paper introduces a PC-based control of a microcontroller core of AT89S52 LED significantly said system. Users may need to show that the contents of the passage of the system equipped with PC software, re-direct the computer to download LED display system, which can be set up display system shows color, Mobile content, mobile speed. The system is mainly used in sitting rooms and stations, squares and other public places; And gave details of the hardware and software