【正文】 系列單片機(jī)為核心的液晶顯示屏控制系統(tǒng)，詳細(xì)闡述了其工作原理、基本功能框圖、關(guān)鍵設(shè)計(jì)技術(shù)及軟件工作流程。經(jīng)過二十多年的研究、競(jìng)爭(zhēng)、發(fā)展，平板顯示器已進(jìn)入角色，成為新世紀(jì)顯示器的主流產(chǎn)品，目前競(jìng)爭(zhēng)最激烈的平板顯示器有四個(gè)品種：（1）場(chǎng)致發(fā)射平板顯示器（FED） （2）等離子體平板顯示器（PDP） （3）有機(jī)薄膜電致發(fā)光器（OEL）（4）薄膜晶體管液晶平板顯示器（TFTLCD）液晶平板顯示器，特別TFTLCD，是目前唯一在亮度、對(duì)比度、功耗、壽命、體積和重量等綜合性能上全面趕上和超過CRT的顯示器件，它的性能優(yōu)良、大規(guī)模生產(chǎn)特性好，自動(dòng)化程度高，原材料成本低廉，發(fā)展空間廣闊，將迅速成為新世紀(jì)的主流產(chǎn)品，是21世紀(jì)全球經(jīng)濟(jì)增長(zhǎng)的一個(gè)亮點(diǎn)。而點(diǎn)陣式LCD不僅可以顯示字符、數(shù)字,還可以顯示各種圖形、曲線及漢字,并且可以實(shí)現(xiàn)屏幕上下左右滾動(dòng),動(dòng)畫功能,分區(qū)開窗口,反轉(zhuǎn),閃爍等功能,用途十分廣泛。LCD可分為段位式LCD、字符式LCD和點(diǎn)陣式LCD。液晶顯示技術(shù)近幾年來發(fā)展很快，各種規(guī)格的LCD顯示班名目繁多，其專用驅(qū)動(dòng)芯片也都相互配套，使LCD在控制和議表系統(tǒng)中廣泛應(yīng)用提供了極大的方便。液晶顯示器是一種功耗極低的顯示器件。液晶顯示器(LCD)英文全稱為L(zhǎng)iquid Crystal Display，是一種數(shù)字顯示技術(shù)，可以通過液晶和彩色過濾器過濾光源，在平面面板上產(chǎn)生圖象。液晶層中的水晶液滴都被包含在細(xì)小的單元格結(jié)構(gòu)中，一個(gè)或多個(gè)單元格構(gòu)成屏幕上的一個(gè)像素。位于最后面的一層是由熒光物質(zhì)組成的可以發(fā)射光線的背光層。摘要早在1888年，人們就發(fā)現(xiàn)液晶這一呈液體狀的化學(xué)物質(zhì)，象磁場(chǎng)中的金屬一樣，當(dāng)受到外界電場(chǎng)影響時(shí)，其分子會(huì)產(chǎn)生精確的有序排列。如果對(duì)分子的排列加以適當(dāng)?shù)目刂?，液晶分子將?huì)允許光線穿越。背光層發(fā)出的光線在穿過第一層偏振過濾層之后進(jìn)入包含成千上萬(wàn)水晶液滴的液晶層。當(dāng)液晶顯示器中的電極產(chǎn)生電場(chǎng)時(shí)，液晶分子就會(huì)產(chǎn)生扭曲，從而將穿越其中的光線進(jìn)行有規(guī)則的折射，然后經(jīng)過第二層過濾層的過濾在屏幕上顯示出來，這就是液晶顯示器顯示技術(shù)。它是一種采用了液晶控制透光度技術(shù)來實(shí)現(xiàn)色彩的顯示器。在袖珍中應(yīng)用越來越廣泛。各種規(guī)格的LCD顯示班名目繁多，其專用驅(qū)動(dòng)芯片也都相互配套，使LCD在控制和議表系統(tǒng)中廣泛應(yīng)用提供了極大的方便。其中,段位式LCD和字符式LCD只能用于字符和數(shù)字的簡(jiǎn)單顯示,不能滿足圖形曲線和漢字顯示的要求。本設(shè)計(jì)以AT89S51單片機(jī)為核心研究點(diǎn)陣式液晶顯示器ACM12864與單片機(jī)的接口電路及編程各部分的功能，能夠正常地實(shí)現(xiàn)所要求的功能，抗干擾性能好、安全性強(qiáng)。提出了一種能實(shí)時(shí)控制顯示內(nèi)容的基于單片機(jī)的液晶顯示屏控制系統(tǒng)設(shè)計(jì)方案，給出了該單片機(jī)的硬件電路和軟件程序，同時(shí)根據(jù)單片機(jī)型號(hào)的選擇，給出了硬件設(shè)計(jì)，軟件流程圖，匯編語(yǔ)言源程序及詳細(xì)注釋等內(nèi)容。s LCD display technology.Liquid Crystal Display (LCD) English Liquid Crystal Display all called, is a kind of digital Display technology, can through Liquid Crystal and color filter light source, in graphic panel produce an image. It is a kind of used LCD control pletely the technology to realize the color display. Liquid crystal display is a very low power consumption of the display device. In the pocket of used more widely. Liquid crystal display technology is developing very fast in recent years, all kinds of LCD display class of numerous, its special drive chip are also supporting each other, make LCD in control system is widely used in the word of the table provides great convenience.All kinds of LCD display class of numerous, its special drive chip are also supporting each other, make LCD in control system is widely used in the word of the table provides great convenience. LCD can be divided into single type LCD, character type LCD and dotmatrix LCD. Among them, the single type LCD and character type LCD can only be used for characters and Numbers that simple, and can39。 And dotmatrix LCD can not only display characters, Numbers, can also display all kinds of graphics, curve and characters, and can realize screen the up and down or so rolling, animation function, partition open window, reverse, flash, and other functions, use very extensive.After 20 DuoNian research, petition and development, flat panel display has entered the role in the new century, being the mainstream of the monitor product, at present the most petitive of the flat panel display has four kinds:(1) fieldemission flat panel display (FED)(2) plasma flat panel display (PDP)(3) organic film electroluminescent device (OEL)(4) thin film transistor LCD flat panel display (tftlcd)LCD flat panel display, special tftlcd, is the only one in the brightness, contrast, power consumption and life, volume and weight prehensive performance in an allround way to catch up with and more than CRT display device, its good performance, mass production characteristics, a high degree of automation, the raw material cost is low, the vast room for development, the new century will quickly bee a mainstream product, is the 21 st century global economic growth of a window.This design as the core research AT89S51 dotmatrix LCD monitor ACM12864 and singlechip microputer interface circuit and the functions of the parts of the programming, to realize the normal requirements of function, strong antijamming performance, safety.This design introduction to AT89S51 series microcontroller as the core of the liquid crystal display (LCD) control system, and expounds the principle, basic function block diagram, the key design technology and software working process. Puts forward a can realtime control showing the contents of the LCD screen based on single chip microputer control system design scheme, and provided the microcontroller hardware circuit and software program, and according to the choice of singlechip microputer model, and gives the hardware design and software flow chart, assembly language source program and detailed notes, etc. 【Keywords】: liquid crystal display (LCD)、 AT89S51 singlechip microputer、 matrix LCD display series ACM12864目錄第1章 8051單片機(jī)的基本結(jié)構(gòu).........................1 8051單片機(jī)概述..........................................1 計(jì)算機(jī)的組成部分.....................................2 典型單片機(jī).......................................2第2章 液晶顯示屏簡(jiǎn)介................................4 液晶顯示概述.........................................4 液晶顯示屏簡(jiǎn)介...............................................5 各種液晶顯示原理......................................8 LCD結(jié)構(gòu)原理.......................................9第3章 ACM12864原理簡(jiǎn)介..............................11 LCD顯示的驅(qū)動(dòng)原理.....................................11 部分功能器件的說明.................................................12第4章 ACM12864與單片機(jī)的接口電路....................................16 指令表............................................16 接口程序設(shè)計(jì)......................................17 液晶顯示實(shí)例............................................20第5章 設(shè)計(jì)流程圖.............................................22 軟件設(shè)計(jì)............................................22 延時(shí)子程序.................................................22 送指令子程序和送數(shù)據(jù)子程序..........................................23 半屏送一頁(yè)數(shù)據(jù)代碼子程序..........................................................23 結(jié)論................................................................31 致謝................................................................32 參考文獻(xiàn)............................................................33第