七段LED数码管字形扫描动态显示技术

Graphemic Scan Dynamic Display Interfacing of 7-Seg LED Nixietube

在综合叙述和分析单片机控制系统中常用的七段LED数码管显示接口技术的设计思路与性能差异的基础上,介绍一种特别适合于需要同时驱动较多位数数码管的场合使用的字形扫描动态显示新技术,其硬件接口电路与软件接口编程均比较简单,同时又能很好地保证显示的亮度。通过提供实例,已经获得工程应用。

Based on a comprehensive description and analysis of the design approach and functional difference of 7-seg LED nixietube which is frequently employed in SCM control system, the paper introduces a kind of new graphemic scan dynamic interfacing technique especially suitable for the occasion that needs to drive multi-nixietube simultaneously. Its hardware interface circuit and software interface programming are comparatively simple and ensure the brightness in the meantime. The thesis provides a practical example related to the technique that has been adopted in engineering application.