单片机的汉字显示控制系统.doc

单片机的汉字显示控制系统 摘 要：LCD液晶显示器由于显示质量高、没有电磁辐射、可视面积大、画面效果好、体积小、质量轻、功耗低等优点，已经成为各种便携式电子产品的理想显示器。 本设计以单片机作为LCD液晶显示控制器为主线，首先描述了系统硬件工作原理，重点对单片机和液晶显示模块分别做了详细介绍,同时也对部分芯片和外围电路进行了介绍和设计，并附以系统结构框图加以说明。软件系统是以单片机的C语言进行设计，既可以简单的实现对显示内容的调整，又方便在Proteus中进行仿真。其次阐述了部分程序的流程图和实现过程。撰写本文的主导思想是软、硬件相结合，以硬件为基础，进行程序的编写。最后对LCD液晶汉字显示原理、设计思想和软、硬件调试作了详细的论述。设计方案简单、成本低，具有广泛的应有价值。 关键词：AT89S52；TS-12864；液晶汉显 Chinese character display control system of SCM Abstract：LCD liquid crystal displays have become the ideal display of portable electronic products because of their high quality, visual area, picture effect, small size, light weight, low power consumption and there is no electromagnetic radiation. The design uses SCM as the main line of LCD liquid crystal display system controller. First of all, it describes the working principle of the hardware system and put emphasis on the single chip and liquid crystal display modules. At the same time, a part of chips and external circuits are introduced, the design uses the block diagram to illustrate the system. The system is based on the C language of SCM to design, which is convenient to realize the simple display of adjustment and simulate in the Proteus. Secondly, it describes the flow chart of some procedures and implementation process. This article is written by the leading ideas of hardware and software combination and it is based on hardware to carry out the preparation procedures. Finally, LCD liquid crystal display principle，design， the software and hardware debugging are discussed in detail. The design is used broadly because of its simple and low cost. KeyWords：AT89S52;TS-12864; LCD character display 引言 LCD液晶显示技术作为人机交互的主流方式，正广泛应用于家电、手机、个人电脑等显示终端。随着电子技术的发展，单片机技术的应用产品日益增多，研究以单片机作为主控制器的LCD液晶显示器控制系统意义重大。展望未来，急速的响应速度将会成为个性化LCD的发展趋势，越来越多的单片机正如雨后春笋般涌现。 本设计由软件和硬件两部分构成，硬件部分以89S52单片机为控制核心，构成主控制电路，以18624构成显示电路。软件部分由单片机编程实现，采用C语言进行设计[1]。 1.设计方案的选择和论证 1.1设计要求 （1）显示全部汉字、英文字符及一些简单的图片。 （2）显示（4*8）32个汉字。 （3）完成程序编写、调试、仿真，并做出硬件电路产品。 1.2单片机芯片的选择和论证 方案一: 采用AT89C51芯