#include<reg52.h>unsigned char i=0,g=0,s=0;f=0;unsigned int j=0;unsigned char code L[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0X90};unsigned char code W[]={0xfe,0xfd,0xfb,0xf7,0xef,0xcf,0xbf,0x7f};
void main(){TMOD=0x01;TH0=(65536-50000)/256;TL0=(65536-50000)%256;EA=1;ET0=1;TR0=1;while(1){for(s=1;s<g+1;s++){P2=W[g-s];P0=L[s];j=100;while(j--);}};}
void tim0(void) interrupt 1 using 1{EA=0;i++;if(i==20){if(f==0){g++;if(g>7)f=1;}else{g--;if(g==0)f=0;}i=0;}TH0=(65536-50000)/256;TL0=(65536-50000)%256;EA=1;}

#include<reg52.h>
unsigned char i=0,g=0,s=0;f=0;
unsigned int j=0;
unsigned char code L[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0X90};
unsigned char code W[]={0xfe,0xfd,0xfb,0xf7,0xef,0xcf,0xbf,0x7f};
void main()
{TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
while(1)
{
for(s=1;s<g+1;s++)
{
P2=W[g-s];
P0=L[s];
j=100;
while(j--);
}
};
}
void tim0(void) interrupt 1 using 1
{EA=0;
i++;
if(i==20)
{
if(f==0)
{
g++;
if(g>7)f=1;
}
else
{
g--;
if(g==0)
f=0;
}
i=0;
}
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;}