#include <reg52.h>

# define uchar unsigned char

# define uint unsigned int

sbit wela =P2^7; //数码管位选信号

sbit dula =P2^6; //数码管段选信号

int time;

int W1,W2,W3,W4,W5,W6;

/*延时子函数*/

void delayms(uint time)

{

uint i;

for(;time>0;time--)

{

for(i=0;i<124;i++)

{;}

}

}

/*数码管显示子函数--不带小数点*/

void display (int num1,int num2) // num1为显示的位置，num2为要显示的数字0-9 {

uchar code wei[]={0xdf,0xef,0xf7,0xfb,0xfd,0xfe}; //数码管各位的码表,为低时选中某一位

uchar code duan[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,}; //段选0-9的码表，为低时某一段亮

P0=wei[num1-1];

wela=1;

wela=0;

switch(num2)

{

case 0: P0=duan[num2]; dula=1; dula=0; delayms(2); break;

case 1: P0=duan[num2]; dula=1; dula=0; delayms(2); break;

case 2: P0=duan[num2]; dula=1; dula=0; delayms(2); break;

case 3: P0=duan[num2]; dula=1; dula=0; delayms(2); break;

case 4: P0=duan[num2]; dula=1; dula=0; delayms(2); break;

case 5: P0=duan[num2]; dula=1; dula=0; delayms(2); break;

case 6: P0=duan[num2]; dula=1; dula=0; delayms(2); break;

case 7: P0=duan[num2]; dula=1; dula=0; delayms(2); break;

case 8: P0=duan[num2]; dula=1; dula=0; delayms(2); break;

case 9: P0=duan[num2]; dula=1; dula=0; delayms(2); break;

}

}

/*数码管显示子函数--带小数点*/

void display2 (int a,int b) // a为显示的位置，b为要显示的数字0.-9.

{

uchar code wei[]={0xdf,0xef,0xf7,0xfb,0xfd,0xfe}; //数码管各位的码表,为低时选中某一位

uchar code duan[]={0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef,}; //段选0.-9.的码表，为低时某一段亮

P0=wei[a-1];

wela=1;

wela=0;

switch(b)

{

case 0: P0=duan[b]; dula=1; dula=0; delayms(2); break;

case 1: P0=duan[b]; dula=1; dula=0; delayms(2); break;

case 2: P0=duan[b]; dula=1; dula=0; delayms(2); break;

case 3: P0=duan[b]; dula=1; dula=0; delayms(2); break;

case 4: P0=duan[b]; dula=1; dula=0; delayms(2); break;

case 5: P0=duan[b]; dula=1; dula=0; delayms(2); break;

case 6: P0=duan[b]; dula=1; dula=0; delayms(2); break;

case 7: P0=duan[b]; dula=1; dula=0; delayms(2); break;

case 8: P0=duan[b]; dula=1; dula=0; delayms(2); break;

case 9: P0=duan[b]; dula=1; dula=0; delayms(2); break;

}

}

/*定时器T0初始化子函数*/

void initTimer0 (void)

{

TMOD = 0x01; //模式1，16位T0,定时10ms

TH0 = 0xD8; //初值

TL0 = 0xF0;

EA = 1; //开总中断

ET0 = 1; //允许T0中断

TR0 = 1; //启动T0

}

/*定时器T0中断子程序*/

void Timer0 (void) interrupt 1

{

int a;

time++;

a=time;

W1=a%10;a/=10;

W2=a%10;a/=10;

W3=a%6;a/=6;

W4=a%10;a/=10;

W5=a%6;a/=6;

W6=a%10;a/=10;

}

/*主函数*/

void main()

{

initTimer0(); //初始化

while(1) {

display (1,W1) ; //数码管显示 display2 (2,W2) ;

display (3,W3) ;

display2 (4,W4) ;

display (5,W5) ;

display2 (6,W6) ;

}

}