#include<reg51.h>


sbit head1=P2^0;
sbit head2=P2^1;
sbit head3=P2^2;
sbit head4=P2^3;

/*
P3^0=1 E
P3^1=2 D
P3^2=3 dp
P3^3=4 C
P3^4=5 G
P3^5=7 B
P3^6=10 F
P3^7=11 A
P2^0=12	H1
P2^1=9  H2
P2^2=8	H3
P2^3=6	H4
*/

unsigned char tab[10]={0xeb,0x28,0xb3,0xba,0x78,0xda,0xdb,0xa8,0xfb,0xfa};
unsigned char i;
void delay2(unsigned int t)
{
 while(t--);
}
main()
{
 head1=0;
 head2=1;
 head3=1;
 head4=1;
 while(1)
 {
 for(i=0;i<10;i++)
  {
  P3=tab[i];
  delay2(0x4fff);
  delay2(0x4fff);
  delay2(0x4fff);
  delay2(0x4fff);
  }

 }
}