单片机的电子显示屏的设计.docVIP

摘 要 点阵显示屏是一种简单的汉字显示器，具有价廉、易于控制、使用寿命长等特点，可广泛应用于各种公共场合，如车站、码头、银行、学校、火车、公共汽车显示等。本文详细介绍了一种低廉的点阵显示屏的设计过程。本系统不仅成功的实现了要求的基本功能，发挥部分也得到完全的实现，而且有一定的创新功能。 本设计采用AT89C52单片机作控制器，整个电路主要由单片机控制及其接口电路、驱动显示电路、电源电路等部分组成。为了简化显示屏电路，降低成本，本系统在单片机部分不加字库存储器。而在PC机上编辑汉字和字符显示信息，并将其转换为相应的点阵显示数据，然后通过串口(采用RS－232通信标准)送给单片机存储并进行显示处理。 关键字：单片机 驱动显示电路 显示屏 点阵 　 ABSTRACT Dot matrix display is a simple characters display, with low price and easy to control and long service life etc, can be widely applied in all kinds of public occasions, such as the station, port, Banks, schools, train, bus display. This paper introduces a kind of cheap dot matrix display design process. This system not only succeeded in carrying through the requirements of the basic functions, and play a part also get completely implementation, and has certain innovation function. This design USES the AT89C52 single chip computer, the entire circuit for controller mainly by single-chip microcomputer control and its interface circuit, drive display circuit, the power circuit components. In order to simplify the display circuit, reduce cost, this system in the SCM parts do not add fonts memory. But in Chinese characters and PC editing information, and character display to translate the corresponding dot matrix display data, then through a serial port (use of RS-232 communication standard) gave microcontroller storage and displayed processing. Key word: SCM drive show circuit display screen bitmap 目 录 引言………………………………………………………………………………………………1 1.硬件系统设计…………………………………………………………………………………1 1．1 单片机控制电路……………………………………………………………………………1 1.2 16x64点阵显示器的设计…………………………………………………………………2 2.LED点阵显示器的扫描驱动………………………………………………………………3 2．1 行扫描驱动…………………………………………………………………………………3 2．2 场扫描驱动…………………………………………………………………………………4 2．3 扫描显示工作过程…………………………………………………………………………5 3.软件系统设计………………………………………………………………………………5 结束语…………………………………………………………………………………………6 致谢词…………………………………………………………………………………………6 参考文献………………………………………………………………………………………6 引 言 LED点阵显示屏是一种简单的汉字显示器，具有价廉、易于控制、使用寿命长等特点，