数码管显示数字程序

#include "reg51.h"

#define THCO 0xee

#define TLCO 0x0

unsigned char code Duan[]={0x3F, 0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F}; //共阴极数码管，0-9段码表

unsigned char Data_Buffer[4]={1,2,3,4};//这个地方就是显示1，2，3，4

//四个数码管显示数值，数组变量定义

sbit P10=P1^0; //四个数码管的位码口定义

sbit P11=P1^1;

sbit P12=P1^2;

sbit P13=P1^3;

void main()

{

TMOD=0x11; //定时器0初始化

TH0=THCO;

TL0=TLCO;

TR0=1;

ET0=1;

EA=1;

while(1) ;

}

void timer0() interrupt 1

{

static unsigned char Bit=0; //静态变量，退出程序后，值保留

TH0=THCO;

TL0=TLCO;

Bit++;

if(Bit>=4)Bit=0;

P1|=0x0f;

P0=Duan[Data_Buffer[Bit]];

switch(Bit)

{

case 0: P10=0;break;

case 1: P11=0;break;

case 2: P12=0;break;

case 3: P13=0;break;

} }