int segment[]={0x3F,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
void setup() {
  DDRD = 0xFF;
}
void loop() {
  for(int i=0; i<9; i++){
    PORTD= segment[i];
    delay(1000);
  }
}