#include <avr/io.h>
#include <util/delay.h>


int main(void)
{

    // set the lowest order bit 
    DDRB |= 0b00000001;

    while (1) {
        PORTB = 0b00000001; // turn on the LED
        _delay_ms(100);

        PORTB = 0b00000000;
        _delay_ms(100);
    
    }

    return(0);

}