#include <avr/io.h>    			
#define serPin 3

int main(void) 
{	

    unsigned char conbyte = 0x44;
    unsigned char regALSB;
    unsigned char x;
    regALSB = conbyte;
    DDRC |= (1<<serPin) ;

    for(x=0;x<8;x++)
      {
        if( regALSB & 0x80)
		PORTC |= (1<<serPin);
	  else
		PORTC &= ~(1<<serPin);

        regALSB = regALSB << 1;
      }

	return 0;
}