怎样用51单片机和led8*8矩阵进行字符汉字显示? , 51单片机Led点阵8*8显示一个字的程序是什么 ?请讲讲程序内容里的原理!谢谢

第一步：先制作字库，少量汉字可以利用画笔工具，在画笔上写上16*16的汉字（最好是宋体），在放大功能下查看每个像素，黑色为1，白色为0，按照列或行依次读取。一个汉字的点阵用32个字节表示。第二步：将上述汉字点阵制成

用51单片机8*8点阵显示出“生日快乐”四个字，这办不到的。至少要用16X16的点阵才能显示出汉字。8*8的点阵只能显示0~9的数字。如果是仿真显示，就用4个8*8的点阵组成一个显示屏，也很简单的。要是实物开发板，那就

8*8点阵是动态扫描的 静态显示也是动态扫描的结果。比如说下面这个程序：include include "74HC595.H"unsigned char code a[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};unsigned char code b[]

用51单片机8×8点阵显示字母，是要用proteus仿真吧，先画出仿真图，再用取模软件画出字母X Q J，然后按行取模，每一个字母的字模是8个字节。显示时，依次取出每行的字模，按行扫描显示即可。下图是一个仿真图。

1、汉字取模 汉字取模，即把汉字对应16x16点阵的图形用16进制数来描述，形成可以用于驱动显示的数据。例如下图，的汉字“中”该字的16x16点阵图形中，每行有16个像素，可以编码为2个字节，每8个像素，对应一个字节的高

在8X8点阵LED上显示柱形，让其先从左到右平滑移动三次，其次从右到左平滑移动三次，再次从上到下平滑移动三次，最后从下到上平滑移动三次，如此循环下去。1． 程序设计内容 8X8点阵LED工作原理说明 :8X8点阵共需要64个发

if(++t==250) //每个数字刷新显示一段时间 { t=0;yi++;

怎样用51单片机和led8*8矩阵进行字符汉字显示?

//显示0 w=0x01; //行变量为第一行 for(i=0;i<8;i++){ P1=w;//行数据送P1口 P0=led0[i];delayms(1);//列数据送P0口 w<<=1;//向下移动一行 } } } void delay1ms(unsigned int ms){ unsigned

0x22,0x1C},//3 {0x08,0x18,0x28,0x48,0x7C,0x08,0x08,0x08},//4 {0x3E,0x20,0x20,0x3E,0x02,0x02,0x22,0x1C},//5 {0x1C,0x22,0x20,

1． 程序设计内容 8X8点阵LED工作原理说明 :8X8点阵共需要64个发光二极管组成，且每个发光二极管是放置在行线和列线的交叉点上，当对应的某一列置1电平，某一行置0电平，则相应的二极管就亮；因此要实现一根柱形的亮法，

说明你的程序根本就不能控制8x8点阵LED，都不能点亮。再说了，显示一个汉字，至少要16x16的点阵，开发板上的8x8点阵只能显示一些图形，根本就不能显示汉字的。

static unsigned int tmr = 0; //1s软件定时器 static unsigned char index = 9; //图片刷新索引 TH0 = 0xFC; //重新加载初值 TL0 = 0x67;//以下代码完成LED点阵动态扫描刷新 P0 = 0xFF; //显示消隐

单片机汉字8x8点阵LED动态显示程序

0x22,0x1C},//3 {0x08,0x18,0x28,0x48,0x7C,0x08,0x08,0x08},//4 {0x3E,0x20,0x20,0x3E,0x02,0x02,0x22,0x1C},//5 {0x1C,0x22,0x20,

1． 程序设计内容 8X8点阵LED工作原理说明 :8X8点阵共需要64个发光二极管组成，且每个发光二极管是放置在行线和列线的交叉点上，当对应的某一列置1电平，某一行置0电平，则相应的二极管就亮；因此要实现一根柱形的亮法，

说明你的程序根本就不能控制8x8点阵LED，都不能点亮。再说了，显示一个汉字，至少要16x16的点阵，开发板上的8x8点阵只能显示一些图形，根本就不能显示汉字的。

static unsigned int tmr = 0; //1s软件定时器 static unsigned char index = 9; //图片刷新索引 TH0 = 0xFC; //重新加载初值 TL0 = 0x67;//以下代码完成LED点阵动态扫描刷新 P0 = 0xFF; //显示消隐

单片机汉字8x8点阵LED动态显示程序

1.首先用字模提取软件提取“大”字的字模。软件网上很多，用“字模提取”关键字可以搜到。也可以用EXCEL在8x8上方框上自己写一个“大字”，然后有标记的为1,没标记的为0,那么一行下来有8位既一个节，总共8行，共8个字

uchar code ydat[8]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};uchar i=0,j=0,t=0,Num_Index,key,xi,yi;sbit we1=P1^1;sbit we2=P1^3;//主程序 void main(){ //P1=0x80;Num_Index=0; //

1.首先在Proteus下选择我们需要的元件，AT89C51、74LS138、MATRIX-8*8-GREEN(在这里使用绿色的点阵)。在Proteus 6.9中8*8的点阵总共有四种颜色，分别为MATRIX-8*8-GREEN，MATRIX-8*8-BLUE，MATRIX-8*8-ORANGE ，MATRIX-

1． 程序设计内容 8X8点阵LED工作原理说明 :8X8点阵共需要64个发光二极管组成，且每个发光二极管是放置在行线和列线的交叉点上，当对应的某一列置1电平，某一行置0电平，则相应的二极管就亮；因此要实现一根柱形的亮法，

51单片机Led点阵8*8显示一个字的程序是什么 ?请讲讲程序内容里的原理!谢谢

不懂可以看各种datasheet，最好别看上变那个图，会误导你，实际点阵的界限不是那样的，要看那个点阵的datasheet的

说明你的程序根本就不能控制8x8点阵LED，都不能点亮。再说了，显示一个汉字，至少要16x16的点阵，开发板上的8x8点阵只能显示一些图形，根本就不能显示汉字的。

ENLED = 0; //使能U4，选择LED点阵 ADDR3 = 0;TMOD = 0x01; //设置T0为模式1 TH0 = 0xFC; //为T0赋初值0xFC67，定时1ms TL0 = 0x67;ET0 = 1; //使能T0中断 TR0 = 1; //启动T0

void main(){ unsigned char w,i;while(1){ //显示0 w=0x01; //行变量为第一行 for(i=0;i<8;i++){ P1=w;//行数据送P1口 P0=led0[i];delayms(1);//列数据送P0口 w<<=1;//向下移动一行 }

求一个8*8LED点阵汉字显示C语言程序(C52)

include<reg52.h> #define uchar unsigned char #define uint unsigned int sbit dula=P2^6; sbit wela=P2^7; sbit rs=P3^5; sbit lcden=P3^4; uchar code table[]="2010-11-28 SUN"; uchar code table1[]=" 15:00:00"; uchar count,miao,shi,fen; void delay(uint z) { uint x,y; for(x=z;x>0;x--) for(y=110;y>0;y--); } void write_com(uchar com) { rs=0; lcden=0; P0=com; delay(5); lcden=1; delay(5); lcden=0; } void write_date(uchar date) { rs=1; lcden=0; P0=date; delay(5); lcden=1; delay(5); lcden=0; } void write_sfm(uchar add,uchar date) { uchar shi,ge; shi=date/10; ge=date%10; write_com(0x80+0x40+add); write_date(0x30+shi); write_date(0x30+ge); } void init() { uchar num; dula=0; wela=0; lcden=0; write_com(0x38); write_com(0x06); write_com(0x0c); write_com(0x01); write_com(0x80); for(num=0;num<14;num++) { write_date(table[num]); delay(5); } write_com(0x80+0x40); for(num=0;num<10;num++) { write_date(table1[num]); delay(5); } TMOD=0x01; TH0=(65536-50000)/256; TL0=(65536-50000)%256; EA=1; ET0=1; TR0=1; } void main() { init(); while(1) { if(count==20) { count=0; miao++; if(miao==60) { miao=0; fen++; if(fen==60) { fen=0; shi++; if(shi==24) { shi=0; } write_sfm(2,shi); } write_sfm(5,fen); } write_sfm(8,miao); } } } void timer0() interrupt 1 { TH0=(65536-50000)/256; TL0=(65536-50000)%256; count++; }
用汇编语言完全可以实现。 第一步：先制作字库，少量汉字可以利用画笔工具，在画笔上写上16*16的汉字（最好是宋体），在放大功能下查看每个像素，黑色为1，白色为0，按照列或行依次读取。一个汉字的点阵用32个字节表示。 第二步：将上述汉字点阵制成表格，采用查表法获取需要显示的汉字点阵。 第三步：依据字库提取时的顺序，采用扫描驱动的方式依次在行和列上输出点阵。
行列扫描显示。。。找个原理图很简单啊，程序也不难。
8*8也就能显示字符，显示汉字比较吃力。 #include #include #define uchar unsigned char #define uint unsigned int uchar code Table_of_Digits[]= { 0x00,0x3e,0x41,0x41,0x41,0x3e,0x00,0x00, //0 0x00,0x00,0x00,0x21,0x7f,0x01,0x00,0x00, //1 0x00,0x27,0x45,0x45,0x45,0x39,0x00,0x00, //2 0x00,0x22,0x49,0x49,0x49,0x36,0x00,0x00, //3 0x00,0x0c,0x14,0x24,0x7f,0x04,0x00,0x00, //4 0x00,0x72,0x51,0x51,0x51,0x4e,0x00,0x00, //5 0x00,0x3e,0x49,0x49,0x49,0x26,0x00,0x00, //6 0x00,0x40,0x40,0x40,0x4f,0x70,0x00,0x00, //7 0x00,0x36,0x49,0x49,0x49,0x36,0x00,0x00, //8 0x00,0x32,0x49,0x49,0x49,0x3e,0x00,0x00, //9 0xff,0x81,0x81,0x81,0x81,0x81,0x81,0xff }; uchar code xdat[8]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01}; uchar code ydat[8]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80}; uchar i=0,j=0,t=0,Num_Index,key,xi,yi; sbit we1=P1^1; sbit we2=P1^3; //主程序 void main() { //P1=0x80; Num_Index=0; //从0 开始显示 TMOD=0x01; //T0 方式0 TH0=(65536-2000)/256; //2ms 定时 TL0=(65536-2000)%256; IE=0x82; key=0; xi=0; yi=0; EX0=1; IT0=1; TR0=1; //启动T0 while(1); } //T0 中断函数 void ext_int0() interrupt 0 { key++; key&=0x03; } void LED_Screen_Display() interrupt 1 { TH0=(65536-2000)/256; //2ms 定时 TL0=(65536-2000)%256; switch(key) { case 0: P0=0xff; we1=1; P0=~Table_of_Digits[Num_Index*8+i]; we1=0; P0=0xff; //输出位码和段码 we2=1; P0=xdat[i]; we2=0; if(++i==8) i=0; //每屏一个数字由8 个字节构成 if(++t==250) //每个数字刷新显示一段时间 { t=0; if(++Num_Index==10) Num_Index=0; //显示下一个数字 } break; case 1: we1=1; P0=~xdat[xi]; we1=0; we2=1; P0=ydat[yi]; we2=0; if(++t==250) //每个数字刷新显示一段时间 { t=0; yi++; if(yi>7){yi=0;xi++;} if(xi>7)xi=0; } break; case 2: we1=1; P0=0x00; we1=0; P0=0xff; //输出位码和段码 we2=1; P0=xdat[i]; we2=0; if(++t==250) //每个数字刷新显示一段时间 { if(++i==8) i=0; //每屏一个数字由8 个字节构成 t=0; } break; default: key=0; i=0; j=0; t=0; xi=0; yi=0; Num_Index=0; we1=1; P0=0xff; we1=0; we2=1; P1=0x80; we2=0; break; } }
#include sbit ADDR0 = P1^0; sbit ADDR1 = P1^1; sbit ADDR2 = P1^2; sbit ADDR3 = P1^3; sbit ENLED = P1^4; unsigned char code image[11][8] = { {0xC3, 0x81, 0x99, 0x99, 0x99, 0x99, 0x81, 0xC3}, //数字0 {0xEF, 0xE7, 0xE3, 0xE7, 0xE7, 0xE7, 0xE7, 0xC3}, //数字1 {0xC3, 0x81, 0x9D, 0x87, 0xC3, 0xF9, 0xC1, 0x81}, //数字2 {0xC3, 0x81, 0x9D, 0xC7, 0xC7, 0x9D, 0x81, 0xC3}, //数字3 {0xCF, 0xC7, 0xC3, 0xC9, 0xC9, 0x81, 0xCF, 0xCF}, //数字4 {0x81, 0xC1, 0xF9, 0xC3, 0x87, 0x9D, 0x81, 0xC3}, //数字5 {0xC3, 0x81, 0xF9, 0xC1, 0x81, 0x99, 0x81, 0xC3}, //数字6 {0x81, 0x81, 0x9F, 0xCF, 0xCF, 0xE7, 0xE7, 0xE7}, //数字7 {0xC3, 0x81, 0x99, 0xC3, 0xC3, 0x99, 0x81, 0xC3}, //数字8 {0xC3, 0x81, 0x99, 0x81, 0x83, 0x9F, 0x83, 0xC1}, //数字9 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, //全亮 }; void main() { EA = 1; //使能总中断 ENLED = 0; //使能U4，选择LED点阵 ADDR3 = 0; TMOD = 0x01; //设置T0为模式1 TH0 = 0xFC; //为T0赋初值0xFC67，定时1ms TL0 = 0x67; ET0 = 1; //使能T0中断 TR0 = 1; //启动T0 while (1); } /* 定时器0中断服务函数 */ void InterruptTimer0() interrupt 1 { static unsigned char i = 0; //动态扫描的索引 static unsigned int tmr = 0; //1s软件定时器 static unsigned char index = 9; //图片刷新索引 TH0 = 0xFC; //重新加载初值 TL0 = 0x67; //以下代码完成LED点阵动态扫描刷新 P0 = 0xFF; //显示消隐 switch (i) { case 0: ADDR2=0; ADDR1=0; ADDR0=0; i++; P0=image[index][0]; break; case 1: ADDR2=0; ADDR1=0; ADDR0=1; i++; P0=image[index][1]; break; case 2: ADDR2=0; ADDR1=1; ADDR0=0; i++; P0=image[index][2]; break; case 3: ADDR2=0; ADDR1=1; ADDR0=1; i++; P0=image[index][3]; break; case 4: ADDR2=1; ADDR1=0; ADDR0=0; i++; P0=image[index][4]; break; case 5: ADDR2=1; ADDR1=0; ADDR0=1; i++; P0=image[index][5]; break; case 6: ADDR2=1; ADDR1=1; ADDR0=0; i++; P0=image[index][6]; break; case 7: ADDR2=1; ADDR1=1; ADDR0=1; i=0; P0=image[index][7]; break; default: break; } //以下代码完成每秒改变一帧图像 tmr++; if (tmr >= 1000) //达到1000ms时改变一次图片索引 { tmr = 0; if (index == 0) //图片索引10~0循环 index = 10; else index--; } }
这个程序验证过，你可以参考试试：//-------------------------------------------//8*8矩阵循环显示字符和数字//显示字符串在数组disstr[]中申明//-------------------------------------------#include#include#define uchar unsigned char#define uint unsigned int//--------------------------------------------uchar code Table_of_Digits[40][8]={ {0x1C,0x22,0x22,0x22,0x22,0x22,0x22,0x1C},//0 {0x08,0x18,0x08,0x08,0x08,0x08,0x08,0x1C},//1 {0x1C,0x22,0x02,0x02,0x1C,0x20,0x20,0x3E},//2 {0x1C,0x22,0x02,0x1C,0x02,0x02,0x22,0x1C},//3 {0x08,0x18,0x28,0x48,0x7C,0x08,0x08,0x08},//4 {0x3E,0x20,0x20,0x3E,0x02,0x02,0x22,0x1C},//5 {0x1C,0x22,0x20,0x3C,0x22,0x22,0x22,0x1C},//6 {0x3E,0x02,0x04,0x08,0x10,0x10,0x10,0x10},//7 {0x1C,0x22,0x22,0x1C,0x22,0x22,0x22,0x1C},//8 {0x1C,0x22,0x22,0x22,0x1E,0x02,0x22,0x1C},//9 {0x00,0x1C,0x22,0x22,0x22,0x3E,0x22,0x22},//A {0x00,0x3C,0x22,0x22,0x3E,0x22,0x22,0x3C},//B {0x00,0x1C,0x22,0x20,0x20,0x20,0x22,0x1C},//C {0x00,0x3C,0x22,0x22,0x22,0x22,0x22,0x3C},//D {0x00,0x3E,0x20,0x20,0x3E,0x20,0x20,0x3E},//E {0x00,0x3E,0x20,0x20,0x3E,0x20,0x20,0x20},//F {0x00,0x1C,0x22,0x20,0x3E,0x22,0x22,0x1C},//G {0x00,0x22,0x22,0x22,0x3E,0x22,0x22,0x22},//H {0x00,0x1C,0x08,0x08,0x08,0x08,0x08,0x1C},//I {0x00,0x3E,0x08,0x08,0x08,0x08,0x28,0x18},//J {0x00,0x20,0x2C,0x30,0x20,0x30,0x2C,0x20},//K {0x00,0x20,0x20,0x20,0x20,0x20,0x20,0x3E},//L {0x00,0x42,0x66,0x5A,0x42,0x42,0x42,0x42},//M {0x00,0x00,0x2C,0x32,0x22,0x22,0x22,0x22},//n {0x00,0x1C,0x22,0x22,0x22,0x22,0x22,0x1C},//O {0x00,0x3C,0x22,0x22,0x3C,0x20,0x20,0x20},//P {0x00,0x1C,0x22,0x22,0x22,0x2A,0x26,0x1F},//Q {0x00,0x38,0x24,0x24,0x38,0x30,0x28,0x24},//R {0x00,0x1C,0x22,0x20,0x1C,0x02,0x22,0x1C},//S {0x00,0x3E,0x08,0x08,0x08,0x08,0x08,0x08},//T {0x00,0x42,0x42,0x42,0x42,0x42,0x42,0x3C},//U {0x00,0x22,0x22,0x22,0x14,0x14,0x08,0x00},//V {0x00,0x41,0x41,0x49,0x55,0x55,0x63,0x41},//W {0x00,0x00,0x42,0x24,0x18,0x18,0x24,0x42},//X {0x00,0x22,0x22,0x14,0x08,0x10,0x20,0x00},//Y {0x00,0x3E,0x02,0x04,0x08,0x10,0x20,0x3E},//Z};//---------------------------------------uchar code xdat[8]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};uchar code ydat[8]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};//---------------------------------------uchar i=0;uchar j=0;uchar t=0;uchar Num_Index,disnum;uchar key;uchar xi;uchar yi;//---------------------------------------uchar code disstr[]="C201600102020";//---------------------------------------sbit we1=P1^1;sbit we2=P1^3;//---------------------------------------//主程序//---------------------------------------void main(){//P1=0x80;Num_Index=0; //从0 开始显示TMOD=0x01; //T0 方式0TH0=(65536-2000)/256; //2ms 定时TL0=(65536-2000)%256;IE=0x82;key=0;xi=0;yi=0;EX0=1;IT0=1;TR0=1; //启动T0while(1);}//---------------------------------------//外部中断0 中断函数//按键处理//---------------------------------------void ext_int0() interrupt 0{ key++; key&=0x03;}//---------------------------------------//定时器0 中断函数//显示控制//---------------------------------------void LED_Screen_Display() interrupt 1{TH0=(65536-2000)/256; //2ms 定时TL0=(65536-2000)%256;switch(key){//显示点阵图形case 0: P0=0xff; if(Num_Index==0)disnum=disstr[Num_Index]-'A'+10; else disnum=disstr[Num_Index]-'0'; we1=1; P0=~Table_of_Digits[disnum][i]; we1=0; P0=0xff; //输出位码和段码 we2=1; P0=ydat[i]; we2=0; if(++i==8) i=0; //每屏一个数字由8 个字节构成 if(++t==250) //每个数字刷新显示一段时间 { t=0; if(++Num_Index==13) Num_Index=0; //显示下一个数字 } break;//流水灯“点”模式case 1: we1=1; P0=~xdat[xi]; we1=0; we2=1; P0=ydat[yi]; we2=0; if(++t==250) //每个数字刷新显示一段时间 { t=0; yi++; if(yi>7){yi=0;xi++;} if(xi>7)xi=0; } break;//流水灯“行列”模式case 2: we1=1; P0=0x00; we1=0; P0=0xff; //输出位码和段码 we2=1; P0=xdat[i]; we2=0; if(++t==250) //每个数字刷新显示一段时间 { if(++i==8) i=0; //每屏一个数字由8 个字节构成 t=0; } break;default: key=0; i=0; j=0; t=0; xi=0; yi=0; Num_Index=0; we1=1; P0=0xff; we1=0; we2=1; P1=0x80; we2=0; break;}}
这个程序验证过，你可以参考试试：//-------------------------------------------//8*8矩阵循环显示字符和数字//显示字符串在数组disstr[]中申明//-------------------------------------------#include#include#define uchar unsigned char#define uint unsigned int//--------------------------------------------uchar code Table_of_Digits[40][8]={ {0x1C,0x22,0x22,0x22,0x22,0x22,0x22,0x1C},//0 {0x08,0x18,0x08,0x08,0x08,0x08,0x08,0x1C},//1 {0x1C,0x22,0x02,0x02,0x1C,0x20,0x20,0x3E},//2 {0x1C,0x22,0x02,0x1C,0x02,0x02,0x22,0x1C},//3 {0x08,0x18,0x28,0x48,0x7C,0x08,0x08,0x08},//4 {0x3E,0x20,0x20,0x3E,0x02,0x02,0x22,0x1C},//5 {0x1C,0x22,0x20,0x3C,0x22,0x22,0x22,0x1C},//6 {0x3E,0x02,0x04,0x08,0x10,0x10,0x10,0x10},//7 {0x1C,0x22,0x22,0x1C,0x22,0x22,0x22,0x1C},//8 {0x1C,0x22,0x22,0x22,0x1E,0x02,0x22,0x1C},//9 {0x00,0x1C,0x22,0x22,0x22,0x3E,0x22,0x22},//A {0x00,0x3C,0x22,0x22,0x3E,0x22,0x22,0x3C},//B {0x00,0x1C,0x22,0x20,0x20,0x20,0x22,0x1C},//C {0x00,0x3C,0x22,0x22,0x22,0x22,0x22,0x3C},//D {0x00,0x3E,0x20,0x20,0x3E,0x20,0x20,0x3E},//E {0x00,0x3E,0x20,0x20,0x3E,0x20,0x20,0x20},//F {0x00,0x1C,0x22,0x20,0x3E,0x22,0x22,0x1C},//G {0x00,0x22,0x22,0x22,0x3E,0x22,0x22,0x22},//H {0x00,0x1C,0x08,0x08,0x08,0x08,0x08,0x1C},//I {0x00,0x3E,0x08,0x08,0x08,0x08,0x28,0x18},//J {0x00,0x20,0x2C,0x30,0x20,0x30,0x2C,0x20},//K {0x00,0x20,0x20,0x20,0x20,0x20,0x20,0x3E},//L {0x00,0x42,0x66,0x5A,0x42,0x42,0x42,0x42},//M {0x00,0x00,0x2C,0x32,0x22,0x22,0x22,0x22},//n {0x00,0x1C,0x22,0x22,0x22,0x22,0x22,0x1C},//O {0x00,0x3C,0x22,0x22,0x3C,0x20,0x20,0x20},//P {0x00,0x1C,0x22,0x22,0x22,0x2A,0x26,0x1F},//Q {0x00,0x38,0x24,0x24,0x38,0x30,0x28,0x24},//R {0x00,0x1C,0x22,0x20,0x1C,0x02,0x22,0x1C},//S {0x00,0x3E,0x08,0x08,0x08,0x08,0x08,0x08},//T {0x00,0x42,0x42,0x42,0x42,0x42,0x42,0x3C},//U {0x00,0x22,0x22,0x22,0x14,0x14,0x08,0x00},//V {0x00,0x41,0x41,0x49,0x55,0x55,0x63,0x41},//W {0x00,0x00,0x42,0x24,0x18,0x18,0x24,0x42},//X {0x00,0x22,0x22,0x14,0x08,0x10,0x20,0x00},//Y {0x00,0x3E,0x02,0x04,0x08,0x10,0x20,0x3E},//Z};//---------------------------------------uchar code xdat[8]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};uchar code ydat[8]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};//---------------------------------------uchar i=0;uchar j=0;uchar t=0;uchar Num_Index,disnum;uchar key;uchar xi;uchar yi;//---------------------------------------uchar code disstr[]="C201600102020";//---------------------------------------sbit we1=P1^1;sbit we2=P1^3;//---------------------------------------//主程序//---------------------------------------void main(){//P1=0x80;Num_Index=0; //从0 开始显示TMOD=0x01; //T0 方式0TH0=(65536-2000)/256; //2ms 定时TL0=(65536-2000)%256;IE=0x82;key=0;xi=0;yi=0;EX0=1;IT0=1;TR0=1; //启动T0while(1);}//---------------------------------------//外部中断0 中断函数//按键处理//---------------------------------------void ext_int0() interrupt 0{ key++; key&=0x03;}//---------------------------------------//定时器0 中断函数//显示控制//---------------------------------------void LED_Screen_Display() interrupt 1{TH0=(65536-2000)/256; //2ms 定时TL0=(65536-2000)%256;switch(key){//显示点阵图形case 0: P0=0xff; if(Num_Index==0)disnum=disstr[Num_Index]-'A'+10; else disnum=disstr[Num_Index]-'0'; we1=1; P0=~Table_of_Digits[disnum][i]; we1=0; P0=0xff; //输出位码和段码 we2=1; P0=ydat[i]; we2=0; if(++i==8) i=0; //每屏一个数字由8 个字节构成 if(++t==250) //每个数字刷新显示一段时间 { t=0; if(++Num_Index==13) Num_Index=0; //显示下一个数字 } break;//流水灯“点”模式case 1: we1=1; P0=~xdat[xi]; we1=0; we2=1; P0=ydat[yi]; we2=0; if(++t==250) //每个数字刷新显示一段时间 { t=0; yi++; if(yi>7){yi=0;xi++;} if(xi>7)xi=0; } break;//流水灯“行列”模式case 2: we1=1; P0=0x00; we1=0; P0=0xff; //输出位码和段码 we2=1; P0=xdat[i]; we2=0; if(++t==250) //每个数字刷新显示一段时间 { if(++i==8) i=0; //每屏一个数字由8 个字节构成 t=0; } break;default: key=0; i=0; j=0; t=0; xi=0; yi=0; Num_Index=0; we1=1; P0=0xff; we1=0; we2=1; P1=0x80; we2=0; break;}}
说明你的程序根本就不能控制8x8点阵LED，都不能点亮。 再说了，显示一个汉字，至少要16x16的点阵，开发板上的8x8点阵只能显示一些图形，根本就不能显示汉字的。
i-a<0 i-a>0 你前面定义的i a，貌似是uchar类型的，是不是跟这个有关，uchar类型是得不出正负的 你直接比较 ia
8*8不能显示汉字（除非一些简单的），要显示汉字起码也要16*16的。 这是一个16*16的电路原理图。 希望可以帮到你…………