#include <avr/io.h>								
#define F_CPU 8000000UL								
#include <util/delay.h>								
//_delay_ms(5000);									


int main (void)										
{
			
DDRC |= 0b11111111;													
DDRD |= 0b11111111;
DDRB |= 0b00111111;														

int Status = 0;																									

	while (1)										
	{

	if (PINB & (1<<PB6))
		{
			_delay_ms(200);
			Status++;
		}
		else if (PINB & (1<<PB7))
			{
				_delay_ms(200);
				Status--;
			}

	switch(Status)
		{

			case 1: 
					PORTC = 0b00100000;	
					PORTD = 0b11110011;
					PORTB = 0b00000111;
			break;

			case 2: 
					PORTC = 0b00110000;	
					PORTD = 0b11110001;
					PORTB = 0b00000111;
			break;

			case 3: 
					PORTC = 0b00111000;	
					PORTD = 0b11110000;
					PORTB = 0b00000111;
			break;

			case 4: 
					PORTC = 0b00011100;	
					PORTD = 0b11110000;
					PORTB = 0b00000111;
			break;

			case 5: 
					PORTC = 0b00001110;	
					PORTD = 0b11110000;
					PORTB = 0b00000111;
			break;

			case 6: 
PORTC = 0b00000111;	
PORTD = 0b11110000;
PORTB = 0b00000111;
break;
}
	}
}