液晶控制模块的制作

文档编号:JD701  文档字数:8812,页数:23

摘 要
本文主要说明了采用1602字符型液晶显示模块进行液晶显示，阐述了液晶显示的基本设计技术。
本文将整个设计开发过程整理成档展现给读者。它从前言、问题提出、需求分析、工作原理、方案的提出、详细设计等逐层深入地把液晶显示进行了分析研究。过去，我们常常运用数据总线、电子总线等方法来实现信息的显示；这类显示不但电路麻烦，而且显示的结果比较单一，不能很好地满足人们的要求。本文介绍了如何运用89C51单片机和1602液晶显示模块的直接访问方式，I/O口直接相连，节省了不必要的浪费，从而实现了液晶显示的全过程。
液晶显示模块是以若干个5*8点阵块组成的显示字符群；具有80个字节的RAM；每个点阵块为一个字符位，字符间距和行距都为一个点的宽度。本次设计制作将通过硬件与软件的结合来实现一定字符量的显示；且在按键的作用下，可分别使其开始显示和终止显示。
通过本文的介绍，相信您将对次显示功能有一个更清晰的认识，也将为所有感兴趣与次类技术的读者给以一定的帮助。有不足的地方还希望您多多提出，并将及时改正！
   关键字：液晶显示电路、显示方法、显示结果

Abstract
The main body of a book has been explained mainly adopt 1602 characters type liquid crystal display module to carry out liquid crystal display, the basic having set forth liquid crystal display designs a technology.
The process entire design is developed arranges the main body of a book ready-made archives unfolding to reader.
It suggests that from the preface , problem , the analysis liquid crystal display has been carried out one by one tier throughly such as need analysis , feasibility study , operating principle , detailed design studies, which have introduced the visit way how to wield 89 C51 monolithic machine and 1602 liquid crystal displays module directness very good, realize the entire proceeding of liquid crystal display thereby.
The liquid crystal display module is by certain 5*8 lattice block composition demonstration character group；Have 80 bytes RAM ；Every lattice piece is a character place, both character spacing and space be a width.
This design manufacture will realize certain character quantity demonstration through the hardware and the software union；And, may part for under the button effect, makes the person begin to demonstrate and end display。
You will show time a function having a more limpid cognition , the reader who will also be that possessions feels interest and the subclass technology gives certain help.
Have the insufficient place to hope that you suggest that much, and the general corrects in time!
 
目 录
摘要  2 

目录  4        

引言  5          

第一章 需求分析  6           

第二章 总体方案  6           

第三章 工作框图及原理  7             

第四章 提出方案及设计  8         

4.1 1602字符型液晶显示模块  8                              

4.1.1 1602各管脚功能  9                                                     

4.1.2 1602液晶模块内部的控制器  9                                           

4.1.3 HD4478读写操作  11                                                      

4.1.4 寄存器的选择  12                                        

4.2 软件分析  13                                           

4.2.1 主程序流程及简易工作工作过程  13                                        

4.2.2 液晶模块的系统资源配置及其它地址分配  第五章 系统调试  18                  

第六章 设计心得  20          

结束语  21                                                               

参考文献21附录一  22     

附录二  23

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