void setup() {
  // put your setup code here, to run once:
 pinMode(19, OUTPUT);   //G
 pinMode(18, OUTPUT);   //F
 pinMode(5, OUTPUT);    //A
 pinMode(17, OUTPUT);   // B
 pinMode(15, OUTPUT);   //C
 pinMode(4, OUTPUT);   //E
 pinMode(2, OUTPUT);   //D
 pinMode(16, OUTPUT);   //DECIMAL
}

void loop() {
  // put your main code here, to run repeatedly:
  // this speeds up the simulation
  digitalWrite(19, LOW); 
  digitalWrite(18, LOW); 
  digitalWrite(17, HIGH); 
  digitalWrite(16, LOW); 
  digitalWrite(15, LOW); 
  digitalWrite(5, HIGH); 
  digitalWrite(4, LOW); 
  digitalWrite(2,LOW); 
}