void setup() {
  // put your setup code here, to run once:
  pinMode(1,OUTPUT);
  pinMode(2,OUTPUT);
  pinMode(3,OUTPUT);
  pinMode(4,OUTPUT);
  pinMode(5,OUTPUT);
  pinMode(6,OUTPUT);
  pinMode(7,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(1,0);
  digitalWrite(2,0);
  digitalWrite(3,0);
  digitalWrite(4,0);
  digitalWrite(5,0);
  digitalWrite(6,0);
  digitalWrite(7,1); //0
  delay(500);
  digitalWrite(1,1);
  digitalWrite(2,0);
  digitalWrite(3,0);
  digitalWrite(4,1);
  digitalWrite(5,1);
  digitalWrite(6,1);
  digitalWrite(7,1); //1
  delay(500);
  digitalWrite(1,0);
  digitalWrite(2,0);
  digitalWrite(3,1);
  digitalWrite(4,0);
  digitalWrite(5,0);
  digitalWrite(6,1);
  digitalWrite(7,0); //2
  delay(500);
  digitalWrite(1,0);
  digitalWrite(2,0);
  digitalWrite(3,0);
  digitalWrite(4,0);
  digitalWrite(5,1);
  digitalWrite(6,1);
  digitalWrite(7,0); //3
  delay(500);
  digitalWrite(1,1);
  digitalWrite(2,0);
  digitalWrite(3,0);
  digitalWrite(4,1);
  digitalWrite(5,1);
  digitalWrite(6,0);
  digitalWrite(7,0); //4
  delay(500);
  digitalWrite(1,0);
  digitalWrite(2,1);
  digitalWrite(3,0);
  digitalWrite(4,0);
  digitalWrite(5,1);
  digitalWrite(6,0);
  digitalWrite(7,0); //5
  delay(500);
  digitalWrite(1,1);
  digitalWrite(2,1);
  digitalWrite(3,0);
  digitalWrite(4,0);
  digitalWrite(5,0);
  digitalWrite(6,0);
  digitalWrite(7,0); //6
  delay(500);
  digitalWrite(1,0);
  digitalWrite(2,0);
  digitalWrite(3,0);
  digitalWrite(4,1);
  digitalWrite(5,1);
  digitalWrite(6,1);
  digitalWrite(7,1); //7
  delay(500);
  digitalWrite(1,0);
  digitalWrite(2,0);
  digitalWrite(3,0);
  digitalWrite(4,0);
  digitalWrite(5,0);
  digitalWrite(6,0);
  digitalWrite(7,0); //8
  delay(500);
  digitalWrite(1,0);
  digitalWrite(2,0);
  digitalWrite(3,0);
  digitalWrite(4,1);
  digitalWrite(5,1);
  digitalWrite(6,0);
  digitalWrite(7,0); //9
  delay(500);
}