LED多功能变色矩阵显示装置软件设计

本文介绍了单板计算机控制的LED多功能变色矩阵显示装置软件设计方法。本工作不但实现了LED矩阵屏的多功能变色显示而且此方法亦适用于电致发光屏、薄膜屏及其它点阵屏的显示装置。该装置可显示出红、绿、黄三种颜色的汉字、字符,图形及轨迹。

SOFTWARE DESIGN FOR MULTIFUNCTION COLOR-VARIABLE LED MATRIX DISPLAY

The software design for multifunction,color-variable LED matrix display controlled by a single board computer is described. The software not only can be used in the multifuction color-variable display of the LED matrix,but also can be used in the powder EL, thin film EL and other matrix displays. Using the program depicted in this paper, it is able to display alphanumeric digit, graphs and lines with three colors of the red, green and yellow.The multifuction color-variable display device having 16×50 picture elements is controlled by a TP-801B single board computer. The element of the matrix panel consists of the double-color LEDs. With the aid of a suitable hardware interface circuit, the characters or graphs, which are to be displayed, are stored into the memory of the computer and the display is controlled by the dynamic scanning program. The display has advantages of low power dissipation, low cost, high level of integration and high stability. Especially, its color, display contents and operation mode can be controlled with great ease. It can be widely used in subway stations and airports as the place name and time display, and in gymnasium and stadiums as the score display. It can also serve as the display terminal of military command systems.According to the software design Z-80 assembler language was used to make the program. The program was debugged and optimized, and then was writted into the EPROM.All the desired results have been achieved.