void setup() {
  // put your setup code here, to run once:
  pinMode(0, OUTPUT); // pin A
  pinMode(1, OUTPUT); // pin B
  pinMode(2, OUTPUT); // pin C
  pinMode(3, OUTPUT); // pin D
  pinMode(4, OUTPUT); // pin E
  pinMode(5, OUTPUT); // pin F
  pinMode(6, OUTPUT); // pin G
}

void loop() {
  // put your main code here, to run repeatedly:
  // PORTD = 0b1101111;  // เลข 9
  digitalWrite(0, LOW);
  digitalWrite(1, LOW);
  digitalWrite(2, LOW);
  digitalWrite(3, LOW);
  digitalWrite(4, HIGH);
  digitalWrite(5, LOW);
  digitalWrite(6, LOW);
  delay(1000);
  digitalWrite(0, HIGH);
  digitalWrite(1, HIGH);
  digitalWrite(2, HIGH);
  digitalWrite(3, HIGH);
  digitalWrite(4, HIGH);
  digitalWrite(5, HIGH);
  digitalWrite(6, HIGH);
  delay(1000);
}