基于P89V51RD2单片机LED点阵显示屏的实现

为了LED点阵显示屏显示的信息可以方便更新,提出了一种基于P89V51RD2单片机LED显示屏的的设计方案,并完成了系统的软硬件设计。该系统的硬件部分主要有单片机、移位寄存器、译码器以及数据存储器等部分组成;软件有两部分:上位机部分,用VB编程来实现汉字字模的提取;下位机部分,由单片机控制移位寄存器以及译码器,来实现LED显示。实际应用表明,该系统具有工作稳定、字符清晰、亮度适中等特点。

Design of LED lattice displaying Chinese word based on P89V51RD2

In order to make the displayed information by LED dot matrix refreshing more conveniently,a design of LED dot matrix is presented based on P89V51RD2 singlechip,and provides the software and hareware of the system.The hardware of this system mainly consists of singlechip,shift register,encoder and data storage.The software of the system is made up by two parts.One is the host computer using VB programming to achieve the extraction of character font,the other is lower computer which uses microcontroller controlling the shift register and encoder to achieve the LED display.The application shows that the system has the characters of working stable,characters clear,moderate brightness and so on.