void setup() {                
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
}
void loop()
{
  // číslo 1
  byte digit = B00000110;
  /*0 = B01011111 = B10100000
	1 = B00000110 = B11111001
	2 = B00111011 = B10100100
	3 = B01001111 = B10110000
	4 = B01100110 = B10011001
	5 = B01101101 = B10010010
	6 = B01111101 = B10000010
	7 = B00000111 = B11111000
	8 = B01111111 = B10000000
	9 = B01101111 = B10010000
    . = B01111111 = B10000000*/
  shiftOut(2, 4, MSBFIRST, digit);
  digitalWrite(3, HIGH);
  digitalWrite(3, LOW);
 }