#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
uchar code f[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
sbit wela=P1^1;
sbit dula=P1^0;
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=150;y>0;y--);
}
void main()
{
uchar a=0,b=0,i,dis_a,dis_b;
while(1)
{
dis_a=f[a++];
dis_b=f[++b];
for(i=0;i<250;i++)
{
dula=1;
dula=dis_a;
dula=0;
P0=0xff;
wela=1;
wela=0xfe;
wela=0;
delay(2);
dula=1;
dula=dis_b;
dula=0;
P0=0xff;
wela=1;
wela=0xfd;
wela=0;
delay(2);
}
if(a==9||(b==9)) while(1);
}
}