bit Operation 1
while(1){
PORTB = 0b00000001;
_delay_ms(500);
PORTB = 0b00000010;
_delay_ms(500);
PORTB = 0b00000100;
_delay_ms(500);
PORTB = 0b00001000;
_delay_ms(500);
PORTB = 0b00010000;
_delay_ms(500);
PORTB = 0b00100000;
_delay_ms(500);
}