void setup() {
  // put your setup code here, to run once:
  pinMode(0, OUTPUT);
  pinMode(1, OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
}
void number0(){
  digitalWrite(0,LOW);
  digitalWrite(1,LOW);
  digitalWrite(2,LOW);
  digitalWrite(3,LOW);
  digitalWrite(4,LOW);
  digitalWrite(5,HIGH);
  digitalWrite(6,LOW);
}

void number1(){
  digitalWrite(0,HIGH);
  digitalWrite(1,LOW);
  digitalWrite(2,LOW);
  digitalWrite(3,HIGH);
  digitalWrite(4,HIGH);
  digitalWrite(5,HIGH);
  digitalWrite(6,HIGH);
}
void number2(){
  digitalWrite(0,LOW);
  digitalWrite(1,LOW);
  digitalWrite(2,HIGH);
  digitalWrite(3,LOW);
  digitalWrite(4,LOW);
  digitalWrite(5,LOW);
  digitalWrite(6,HIGH);
}
void number3(){
  digitalWrite(0,LOW);
  digitalWrite(1, LOW);
  digitalWrite(2,LOW);
  digitalWrite(3,LOW);
  digitalWrite(4, HIGH);
  digitalWrite(5, LOW);
  digitalWrite(6, HIGH);
}
void number4(){
  digitalWrite(0,HIGH);
  digitalWrite(1,LOW);
  digitalWrite(2,LOW);
  digitalWrite(3,HIGH);
  digitalWrite(4,HIGH);
  digitalWrite(5,LOW);
  digitalWrite(6,LOW);
}
void loop() {
  // put your main code here, to run repeatedly:
  number0();
  delay(1000);
  number1();
  delay(1000);
  number2();
  delay(1000);
  number3();
  delay(1000);
  number4();
  delay(1000);

}