#define led1 9
#define led2 10
#define led3 11

#define puls1 4
#define puls2 7
#define puls3 8

int almacen1;
int almacen2;
int almacen3;

void setup() 
{
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(puls1, INPUT);
  pinMode(puls2, INPUT);  
  pinMode(puls3, INPUT);
}

void loop() 
{
  almacen1 = digitalRead(puls1);
  almacen2 = digitalRead(puls2);  
  almacen3 = digitalRead(puls3);

  if (almacen1 ==1 && almacen2 ==0 && almacen3 ==0) {
    digitalWrite(led1, 0);
    digitalWrite(led2, 0);
    digitalWrite(led3, 1);  
  }

  if (almacen1 ==0 && almacen2 ==1 && almacen3 ==0) {
    digitalWrite(led1, 1);
    digitalWrite(led2, 0);
    digitalWrite(led3, 0);  
  }

  if (almacen1 ==0 && almacen2 ==0 && almacen3 ==1) {
    digitalWrite(led1, 1);
    digitalWrite(led2, 1);
    digitalWrite(led3, 0);  
  }

  if (almacen1 ==0 && almacen2 ==0 && almacen3 ==0) {
    digitalWrite(led1, 0);
    digitalWrite(led2, 0);
    digitalWrite(led3, 0);  
  }
}