市場營銷LED點(diǎn)陣廣告牌

1、論文題目：LED點(diǎn)陣廣告牌系統(tǒng)設(shè)計(jì)摘要隨著LED技術(shù)日趨成熟，在汽車、廣告、日常生活等諸多領(lǐng)域都可以看見LED點(diǎn)陣顯示屏的身影，目前高亮度LED已可以產(chǎn)生紅、綠、藍(lán)三原色的光，可以組成大型單色、雙色和彩色LED顯示屏，常見的應(yīng)用是文字顯示及氣象預(yù)報(bào)圖像，另外，也盛行使用LED顯示屏作為廣告招牌。因此，LED在各個(gè)領(lǐng)域有廣泛的應(yīng)用。本文介紹了一種基于單片機(jī)的LED點(diǎn)陣廣告牌系統(tǒng)，系統(tǒng)是以AT89S51單片機(jī)為核心實(shí)現(xiàn)LED點(diǎn)陣漢字的顯示。本文分別從硬件設(shè)計(jì)和軟件實(shí)現(xiàn)給予詳盡的描述。硬件部分由行驅(qū)動(dòng)模塊、列驅(qū)動(dòng)模塊以及LED點(diǎn)陣顯示模塊組成；軟件部分采用簡單流通性強(qiáng)的C語言編程，實(shí)現(xiàn)不同的顯示方式

2、、顯示不同的點(diǎn)陣漢字、調(diào)速。此LED點(diǎn)陣顯示系統(tǒng)是基于AT89S51單片機(jī)的控制，采用這種方法設(shè)計(jì)的LED點(diǎn)陣顯示系統(tǒng)成本低、易于實(shí)現(xiàn)?！娟P(guān)鍵詞】AT89S51單片機(jī)；LED點(diǎn)陣漢字；【論文類型】應(yīng)用型Title: LED Dot billboards System designMajor: Electronic and Information EngineeringName: LiYaSignature:Supervisor: Zhang Xiao LiSignature:ABSTRACTWith the LED technology matures, many fields of auto

3、motive, advertising, and daily life can be seen the figure of the LED dot matrix display.At present, high-brightness LEDs can produce red, green and blue light and can form a large monochromethe two-color and color LED display.The common application is the image of text display and weather forecasts

4、. In additionthe prevalence of the use of LED display advertising signs.Therefore, the LED has a wide application in various fields.This article describes a microcontroller-based LED dot matrix billboard system and theAT89S51 microcontrolleristhe core of Chinese characters of LED dot matrix displays

5、ystemThe articlegive a detailed description separately from the hardware design and software.The hardware part is made of the line driver module, the column driver module and LED dot matrix display module and software part simple liquidity of the C programming language.So can presenta different disp

6、lay mode , a variety of dot matrix charactersdisplay and different space system iscontrolled by AT89S51 microcontroller.The LED dot matrix display system using this method designed is low-cost and easy to implement.【Key words】AT89S51 Single-chip microcomputer(SCM); LED Dot matrix characters【Type of

7、Thesis】Appliedtype目 錄TOC o 1-3 h z u HYPERLINK l _Toc327285599 1 緒論 圖二 LED點(diǎn)陣系統(tǒng)顯示PCB圖附錄. LED點(diǎn)陣顯示系統(tǒng)實(shí)物圖 圖三 LED點(diǎn)陣顯示系統(tǒng)實(shí)物圖圖四 右移顯示圖五 右移顯示 圖六 左移顯示附錄. LED點(diǎn)陣顯示系統(tǒng)主要程序#include #include #define uchar unsigned char#define uint unsigned int#define hang0 XBYTE0X7FFF#define hang1 XBYTE0XbFFF#define lie XBYTE0XDFFFuc

8、har key=0,l=0,r=0;unsigned char key_code=0 x79,0 x24,0 x30,0 x19,0 x12,0 x02,0 x78,0 x00,0 x10;uchar ksp03=0 x76,0 x75,0 x73;uchar ksp13=0 x37,0 x57,0 x67;void delay(uchar);uchar key_scan();void youyi();void zanting();void kaishi();void zuoyi();char code *tabler;char code *tablel;/*字符碼略*/*mian funca

9、tion*/void main() while(1) uchar s=1; while(s) P1=0 x70; if(P1!=0 x70) s=0; key=key_scan(); while(!s) P1=0 x70; if(P1=0 x70) s=1; switch(key) case 1:case 2:case 3:youyi();break;case 9:case 8:case 7:zuoyi();break;case 4:r+;if(r=3)r=0;break;case 5:zanting();break;case 6:l+;if(l=4)l=0;break; /鍵盤掃描unsig

10、ned char key_scan() unsigned char i,j,key; P1=0 x70; while(P1!=0 x70) delay(10); P1=0 x70; while(P1!=0 x70) for(i=0;i=2;i+) P1=ksp0i; if(P1!=ksp0i) break; for(j=0;j=2;j+) P1=ksp1j; if(P1!=ksp1j) break; key=i*3+j+1; return(key); return(0); return(0); /*delay time funcation*/void delay(uchar c) uchar

11、i; for(i=0;ic;i+); void zuoyi() uint b=0; /顯示偏移控制，char類型最多只能顯示14個(gè)漢字+一個(gè)空白位字符uchar a=0; /控制移動(dòng)間隔時(shí)間uchar i,j,k; /i:每個(gè)字的顯示循環(huán)；j每個(gè)字的顯示碼除以2；k每列刷新次數(shù)uchar m,n;m=key; if(m=7)n=2;else if(m=8)n=4;else if (m=9)n=5;else n=5;if(l=0)tablel=tablel1;else if(l=1)tablel=tablel2;else if(l=2)tablel=tablel3;else if(l=3)tab

12、lel=tablel4;while(1)j=0;if(a=6) /移動(dòng)間隔時(shí)間；取值0-255a=n;b+=2; key=0;key=key_scan(); if(key!=0) return;/unsigned char n;if(b=448) /顯示到最后一個(gè)字，回頭顯示，判斷值=字?jǐn)?shù)*32b=0;for(i=0;i64;i+)lie=i;/for(;jn;j-)/hang0=0 x00; /清屏hang1=0 x00;/hang0=0 x00;/hang1=0 x00;/ for(i=0;i64;i+)lie=i;for(k=0;k5;k+)hang0=tablelj+b;hang1=t

13、ablelj+b+1;hang0=0 x00; /清屏 hang1=0 x00;j+=2;a+; void youyi() uchar i,j,k; /i:每個(gè)字的顯示循環(huán)；j每個(gè)字的顯示碼除以2；k每列刷新次數(shù)uint b=448; /顯示偏移控制，char類型最多只能顯示14個(gè)漢字+一個(gè)空白位字符uchar a;uchar m,n;m=key; if(m=1)n=2;else if(m=2)n=4;else if (m=3)n=5; /控制移動(dòng)間隔時(shí)間else n=5;if(r=0)tabler=tabler1;else if(r=1)tabler=tabler2;else if(r=2)

14、tabler=tabler3;while(1) j=0;if(a=6) /移動(dòng)間隔時(shí)間；取值0-255 a=n;b-=2;key=0; key=key_scan(); if(key!=0) return;if(b=0) /顯示到最后一個(gè)字，回頭顯示，判斷值=字?jǐn)?shù)*32b=448;for(i=0;i64;i+) lie=i;hang0=0 x00; /清屏hang1=0 x00; for(i=0;i64;i+)lie=i;for(k=0;k5;k+)hang0=tablerj+b;hang1=tablerj+b+1;hang0=0 x00; /清屏 hang1=0 x00;j+=2;a+; vo

15、id zanting() while(1)key=0; key=key_scan();if(key!=0) return; void kaishi() 參考文獻(xiàn)1 靳桅，鄔芝權(quán)，李騏.基于51系列單片機(jī)的LED顯示屏開發(fā)技術(shù)（第2版）2 李光飛，李良兒，樓然苗.單片機(jī)C程序設(shè)計(jì)實(shí)例指導(dǎo)3李華.MCS-51系列單片機(jī)實(shí)用接口技術(shù)M.北京：北京航空航天大學(xué)出版社，1993年:50-56。4 何立民.MCS-51系列單片機(jī)應(yīng)用系統(tǒng)設(shè)計(jì)M.北京航空航天大學(xué)出版社，1998:23-305 潘新民，王燕芳，單片機(jī)微型計(jì)算機(jī)實(shí)用系統(tǒng)設(shè)計(jì)M.北京：人民郵電出版社，1992:15-23。6 倪云峰，何蓉，詹訓(xùn)進(jìn)，單片機(jī)原理與應(yīng)用.西安：西安電子