#include <avr/io.h>    			

void transmit (unsigned char data);

int main (void)
{
  	unsigned char ch ;
	
  	UCSRB = (1<<TXEN)|(1<<RXEN) ;											
  	UCSRC = (1<< UCSZ1)|(1<<UCSZ0)|(1<<URSEL);
  	UBRRL = 0x33 ;

  	while(1)
  	{
    	while(!(UCSRA&(1<<RXC))); 	
    
		ch = UDR ;
    
		if (ch >= 'a' && ch <= 'z')
    	{
      		ch += ('A'-'a');
      		
			while (! (UCSRA & (1<<UDRE)));
        	
			UDR = ch ;
    	}
  	}

  return 0 ;
}