#include "REG51.H"

unsigned char led[34]={ 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
                        0x7f,0x3f,0x1f,0x0f,0x07,0x03,0x01,0x00,
                        0x00,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,
                        0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
unsigned char i,j;

void init(void)
{
    IE=0X82;
    TCON=0X10;
    TMOD=0X01;
    TH0=0x3c;
    TL0=0xb0;
}

void timer0(void)  interrupt 1
{
    int k;
    k++;
    TH0=0x3c;
    TL0=0xb0;
    
    if(k==1)
    {
        k = 0;
        j++;
           if(j==24)
        {
            j = 0;
        }
    }
}

void main(void)
{
       init();
    while(1)
    {
         for(i = 0;i < 8;i++)
        {
            P0 = led[i+j];
        }
  
    }
}