AbstractThis system to STC12C5A60S2 singlechip 8LED dot matrix, the 32X32 dot matrix display of modules. Based on the basic requirements, the topic of advertising lights display system focuses on design. In addition, this system by software to realize most function, absorbs the hardware and software of thoughts, most functions through software to achieve simple, the circuit, the system stability is greatly increased. LED display with its flexible fabrics, showing stability, low power consumption, long life, mature technology, low cost characteristics at the station, securities, sports venues, highways and various interior and exterior shows the information release, public occasions propaganda, environmental parameters in real time, major activities countdown etc widely application. This design mainly STC12C5A60S2 singlechip, using a serial transmission, dynamic scanning technology, making a paragraph of multi-function screen with modular LED. Is proved by practice, this system shows the error is small, stable performance, reasonable structure. This system has succeeded in carrying through the function of the static and dynamic display completely.Key Words: STC12C5A60S2 microcontroller; LED; 32X32 bitm1.绪论1.1 课题背景目前，国内的 LED 点阵显示屏大部分是单显示型，其显示的内容相对较少，显示花样较单一。一般在产品出厂时，显示内容就已写入显示屏控制系统中的EPROM 芯片内，当需要更换显示内容时就非常困难，这样使该类型的显示屏使用范围受到了限制。国内的另一种 LED 显示屏——可编程序型 LED 显示屏，虽然增加了显示屏系统的编程能力，显示内容和显示花样都有所增加，但也存在着更换显示内容不便的缺点。随着社会经济的迅速进展，如今的广告牌都存在着显示内容丰富、信息量大、信息更换速度快等特点。因此传统的 LED 显示屏控制系统已经越来越不能满足现代广告宣传业的需要。而利用 PC 机通信技术控制 LED 显示屏，则具有显示内容...
