8×8LED点阵屏显示数字

8×8LED点阵屏显示数字的相关程序及电路图：

#include

#include

#define uchar unsigned char

#define uint unsigned int

uchar code Table_OF_Digits[]=

{

0x00,0x3e,0x41,0x41,0x41,0x3e,0x00,0x00,

0x00,0x00,0x00,0x21,0x7f,0x01,0x00,0x00,

0x00,0x27,0x45,0x45,0x45,0x39,0x00,0x00,

0x00,0x22,0x49,0x49,0x49,0x36,0x00,0x00,

0x00,0x0c,0x14,0x24,0x7f,0x04,0x00,0x00,

0x00,0x72,0x51,0x51,0x51,0x4e,0x00,0x00,

0x00,0x3e,0x49,0x49,0x49,0x26,0x00,0x00,

0x00,0x40,0x40,0x40,0x4f,0x70,0x00,0x00,

0x00,0x36,0x49,0x49,0x49,0x36,0x00,0x00,

0x00,0x32,0x49,0x49,0x49,0x3e,0x00,0x00,

};

uchar i=0,t=0,Num_Index = 0; //全局变量延迟时间显示数字//==================================================================//主函数

void main()

{ //主函数开始P3 = 0x80; //扫描最右列

Num_Index = 0; //初始扫描信号

TMOD = 0x00; //定时器方式0

TH0 = (8192-2000)/32; //装入计数初值

TL0 = (8192-2000)%32;

TR0 = 1; //启动定时器T0

IE = 0x82; //允许中断

while(1); //等待中断

}

void LED_Screen_Display() interrupt 1

{

TH0 = (8192-2000)/32; //重装计数初值

TL0 = (8192-2000)%32;

P3 = _crol_(P3,1); //P3口显示左移

P0 = ~Table_OF_Digits[Num_Index * 8 +i]; //从Table_OF_Digits[]中取数

if(++i == 8) //判断i是否为8

i = 0; //若i=8，将i赋值为0

if(++t == 250) //判断时间t是否为250s

{

t = 0x00;

if(++Num_Index == 10) // 判断时间显示数是否为10

Num_Index = 0; // 若为的10，循环显示}

}