基于AT89C51单片机的LED点阵显示系统设计

摘要

介绍了基于AT89C51为控制器的LED点阵显示屏的设计，包括硬件设计和软件设计两部分。系统硬件部分由单片机、行驱动电路、列驱动电路、上位PC机，RS-232通讯接口等部分组成；软件设计采用动态显示模式的16×16点阵显示屏，LED点阵模块选用8×8基础模块，每4块排列构成一个16×16的点阵屏，用于显示一个汉字[2]。%This paper uses AT89C51 as the controller of LED dot matrix display screen of the hardware and software design. Part of the system hardware is mainly composed of single chip microcomputer, line driver circuit, drive circuit, PC machine, RS-232 communication interface and other components;Software design adopts the model of dynamic display of 16×16 dot matrix display screen, LED dot matrix display screen choose 8×8 basic module, every 4 piece arranged in a 16×16 lattice, used to display a Chinese character.