数码管显示.doc

#include<reg52.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
uchar temp,num,a,b,c,d,e,f,t,h;
uint shu;
uchar code table[]={0x07,0x7d,0x6d,0x66,0x4f,0x5b};
void delay(uint z)
{
uint x,y;
for(x=z;z>0;z--)
for(y=110;y>0;y--);

}

void mer()
{
temp=0xfe;
P0=temp;
shu=432;
TMOD=0X11;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
TH1=(65536-50000)/256;
TL1=(65536-50000)%256;
EA=1;
ET0=1;
ET1=1;
TR0=1;
TR1=1;
}

void display(uchar a,uchar b,uchar c,uchar d,uchar e,uchar f)
{
P0=table[1];
P2=5;
delay(2);

P0=table[2];
P2=4;
delay(2);

P0=table[3];
P2=2;
delay(2);

P0=table[d] ;
P2=3;
delay(2);

P0=table[e];
P2=2;
delay(2);

P0=table[f];
P2=1;
delay(2);

}

void main()
{ mer();
while(1)
{
display(1,2,3,d,e,f);
}

}

void mer1() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
t++;
if(t==2)
{ t=0;
temp=_crol_(temp,1);
P0=temp;

}

}

void mer2() interrupt 3
{
TH1=(65536-50000)/256;
TL1=(65536-50000)%256;

d=shu/100;
e=shu%100/10;
f=shu%10;
if(h==10)
{ h=0;
shu--;
if(shu==398)
{ TR0=0;
P0=0Xff;
TR1=0;

}

}

}