int a[8]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
int b[9]={0xFF,0xFE,0xFC,0xF8,0xF0,0xE0,0xC0,0x80,0x00};
int dz1[8]={0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
int dz2[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
void delay(int x){
unsigned int i,j;
for(i=0;i<x;i++)
for(j=0;j<121;j++);
}