基于89C52单片机的液晶显示系统设计 毕业设计.doc

东华理工大学长江学院 毕业设计(论文) 题 目: 基于89C52单片机的液晶显示系统 设计 英文题目: Based on the 89C52 Single—chip LCD Display System Design 摘 要  液晶是一种高分子材料，液晶显示器的主要原理是以电流刺激液晶分子产生点、线、面并配合背部灯管构成画面。 在数字电路中，所有的数据都是以0和1保存的，对LCD控制器进行不同的数据操作，可得到不同的结果。对于显示英文操作，只需要8位而对于中文，常用却有6000以上，将ASCII表的高128个很少用到的数值以两个为一组来表示汉字，即汉字的内码而剩下的低128图形点阵液晶显示器,它主要由行驱动器/列驱动器及128×64全点阵液晶提供高效的代码，结构化的编程和丰富的操作符。C51是一种编译型程序设计语言，它兼顾了多种高级语言的特点，并具备汇编语言的功能，具可移植性，而且可以直接实现对硬件的控制。 关键词：液晶；LCD；字模调用；动态显示；C51 Abstract The liquid crystal is one kind of high polymer material,Liquid-crystal display main principle is produces by the electric current stimulation liquid crystal member produces the spot,line,surface and coordinate back tube constitution picture. In digital circuit,all data all are by 0 and 1 preservation,carries on the different data manipulation to the LCD controler,can obtion the different result.Regarding demonstration English operation,only needs 8 bits.But regarding Chinese,actually has above commonly used 6000,use the high 128 of very little uses ASCII table take two as a group to expresses Chinese character,namely Chinese character encoding.After obtained the Chinese character encoding,also is only group of numerals,this involves to the writing matrix,although the matrix also is group of numerals,but its significance actually had the radical change with the digital significance,it is with digital each information to record the shap of English or the Chinese character.The 12864 is one kind of graph lattice Liquid-crystal display,it mainly is composed by column driver,row driver and 128X64 entire lattice Liquid-crystal display.May complete the graphical display,also may demonstrate 8X4 Chinese character.Based on 89C52 LCD12864 liquid crystal may realize the matrix transfer and dynamic demonstration. This plan uses the C lanuage programming,C51 can provide the highly effective code,structurized programming and abundant denotation.Th