点阵LED多功能动态显示实验系统设计

Design of Lattice LED Multi-functional Dynamic Displaying Experiment System

点阵LED多功能动态显示实验系统由上位机和下位机组成。上位机硬件为支持Windows的PC机,所设计的上位机软件可安装于Windows XP系统运行,用于对待显示的内容、字体、显示方式、是否显示时间等选项进行实时设置。下位机为一个基于单片机控制的点阵LED字符显示系统,下位机通过串口与上位机通信,从上位机接收待显示字符的点阵信息及控制信息,并存于外部存储器中,需显示时再从外部存储器取出送LED点阵显示屏显示。可同时显示4个汉字,实现字符的静止显示以及左移、右移,以便显示更多字符。该系统可用作学生们实践相关课程理论知识的软硬件实验平台。

This lattice LED multi-functional dynamic displaying experiment system is composed of upper machine and lower machine.The upper machine is a PC with Windows and its software can be used to set the displaying content,style,mode,time etc.The lower machine is a lattice LED displaying system,which is controlled by single-chip microcomputer（SCM）.The lattice and control information of the characters to be displayed are sent to the SCM by PC through the serial interface and stored in the external memory and can be fetched out to display when needed by the SCM.Four Chinese characters can be displayed simultaneously on the screen which can be shifted left or right so as to display more characters.It provides a good software and hardware experiment platform for students to practice their knowledge of relative courses.