int portaa=2;
int portab=3;
int portac=4;
int portad=5;
int portae=6;
int portaf=7;
int portag=8;

void setup() 

{
  pinMode(portaa, OUTPUT);
  pinMode(portab, OUTPUT);
  pinMode(portac, OUTPUT);
  pinMode(portad, OUTPUT);
  pinMode(portae, OUTPUT);
  pinMode(portaf, OUTPUT);
  pinMode(portag, OUTPUT);

}

void loop() {
  //digito 0
  digitalWrite(portaa,1);
  digitalWrite(portab,1);
  digitalWrite(portac,1);
  digitalWrite(portad,1);
  digitalWrite(portae,1);
  digitalWrite(portaf,1);
  digitalWrite(portag,0);
  delay(1000);

  //digito 1 
  digitalWrite(portaa,0);
  digitalWrite(portab,1);
  digitalWrite(portac,1);
  digitalWrite(portad,0);
  digitalWrite(portae,0);
  digitalWrite(portaf,0);
  digitalWrite(portag,0);
  delay(1000);

  //digito 2
  digitalWrite(portaa,1);
  digitalWrite(portab,1);
  digitalWrite(portac,0);
  digitalWrite(portad,1);
  digitalWrite(portae,1);
  digitalWrite(portaf,0);
  digitalWrite(portag,1);
  delay(1000);

  //digito 3
  digitalWrite(portaa,1);
  digitalWrite(portab,1);
  digitalWrite(portac,1);
  digitalWrite(portad,1);
  digitalWrite(portae,0);
  digitalWrite(portaf,0);
  digitalWrite(portag,1);
  delay(1000);

  //digito 4
  digitalWrite(portaa,0);
  digitalWrite(portab,1);
  digitalWrite(portac,1);
  digitalWrite(portad,0);
  digitalWrite(portae,0);
  digitalWrite(portaf,1);
  digitalWrite(portag,1);
  delay(1000);

  //digito 5
  digitalWrite(portaa,1);
  digitalWrite(portab,0);
  digitalWrite(portac,1);
  digitalWrite(portad,1);
  digitalWrite(portae,0);
  digitalWrite(portaf,1);
  digitalWrite(portag,1);
  delay(1000);

  //digito 6
  digitalWrite(portaa,1);
  digitalWrite(portab,0);
  digitalWrite(portac,1);
  digitalWrite(portad,1);
  digitalWrite(portae,1);
  digitalWrite(portaf,1);
  digitalWrite(portag,1);
  delay(1000);
  
  //digito 7
  digitalWrite(portaa,1);
  digitalWrite(portab,1);
  digitalWrite(portac,1);
  digitalWrite(portad,0);
  digitalWrite(portae,0);
  digitalWrite(portaf,0);
  digitalWrite(portag,0);
  delay(1000);

  //digito 8
  digitalWrite(portaa,1);
  digitalWrite(portab,1);
  digitalWrite(portac,1);
  digitalWrite(portad,1);
  digitalWrite(portae,1);
  digitalWrite(portaf,1);
  digitalWrite(portag,1);
  delay(1000);

  //digito 9
  digitalWrite(portaa,1);
  digitalWrite(portab,1);
  digitalWrite(portac,1);
  digitalWrite(portad,1);
  digitalWrite(portae,0);
  digitalWrite(portaf,1);
  digitalWrite(portag,1);
  delay(1000);
}