#include<reg52.h>
#define uchar unsigned char
void delay200();
uchar table[]={0xf8,0xf4,0xf2,0xf1,0x00};
void main()
{
while(1)
{P1=table[0];
delay200();
P1=table[1];
delay200();
P1= table[2];
delay200();
P1=table[3];
delay200();
}
}
void delay200()
{uchar j;
for(j=0;j<200;j++);}