unsigned const int A = 4;
unsigned const int B = 5;
unsigned const int C = 6;
unsigned const int D = 7;
unsigned const int E = 8;
unsigned const int F = 3;
unsigned const int G = 2;
#define BOTAO_DIM 9
#define BOTAO_AUM 10
int numeroAtual = 0;

//Botão Azul = Diminui
//Botão Vermelho = Aumenta

void setup()
{
pinMode(A, OUTPUT) ;
pinMode(B, OUTPUT) ;
pinMode(C, OUTPUT) ;
pinMode(D, OUTPUT) ;
pinMode(E, OUTPUT) ;
pinMode(F, OUTPUT) ;
pinMode(G, OUTPUT) ;
pinMode(BOTAO_DIM, INPUT);
pinMode(BOTAO_AUM, INPUT);
atualizarDisplay();
}

void loop()
{
  if (digitalRead(BOTAO_AUM) == HIGH) // Botão para aumentar pressionado
  {
    numeroAtual++;
    if (numeroAtual > 9)
      numeroAtual = 9;
    atualizarDisplay();
    delay(200);
  }

  if (digitalRead(BOTAO_DIM) == HIGH) // Botão para diminuir pressionado
  {
    numeroAtual--;
    if (numeroAtual < 0)
      numeroAtual = 0;
    atualizarDisplay();
    delay(200); 
  }
}

void atualizarDisplay()
{
  switch (numeroAtual)
  {
  case 0:
    digitalWrite(A, HIGH);
    digitalWrite(B, HIGH);
    digitalWrite(C, HIGH);
    digitalWrite(D, HIGH);
    digitalWrite(E, HIGH);
    digitalWrite(F, HIGH);
    digitalWrite(G, LOW);
    delay(1000);
    break;
  case 1:
    digitalWrite(A, LOW);
    digitalWrite(B, HIGH);
    digitalWrite(C, HIGH);
    digitalWrite(D, LOW);
    digitalWrite(E, LOW);
    digitalWrite(F, LOW);
    digitalWrite(G, LOW);
    delay(1000);
    break;
  case 2:
    digitalWrite(A, HIGH);
    digitalWrite(B, HIGH);
    digitalWrite(C, LOW);
    digitalWrite(D, HIGH);
    digitalWrite(E, HIGH);
    digitalWrite(F, LOW);
    digitalWrite(G, HIGH);
    delay(1000);
    break;
  case 3:
    digitalWrite(A, HIGH);
    digitalWrite(B, HIGH);
    digitalWrite(C, HIGH);
    digitalWrite(D, HIGH);
    digitalWrite(E, LOW);
    digitalWrite(F, LOW);
    digitalWrite(G, HIGH);
    delay(1000);
    break;
  case 4:
    digitalWrite(A, LOW);
    digitalWrite(B, HIGH);
    digitalWrite(C, HIGH);
    digitalWrite(D, LOW);
    digitalWrite(E, LOW);
    digitalWrite(F, HIGH);
    digitalWrite(G, HIGH);
    delay(1000);
    break;
  case 5:
    digitalWrite(A, HIGH);
    digitalWrite(B, LOW);
    digitalWrite(C, HIGH);
    digitalWrite(D, HIGH);
    digitalWrite(E, LOW);
    digitalWrite(F, HIGH);
    digitalWrite(G, HIGH);
    delay(1000);
    break;
  case 6:
    digitalWrite(A, HIGH);
    digitalWrite(B, LOW);
    digitalWrite(C, HIGH);
    digitalWrite(D, HIGH);
    digitalWrite(E, HIGH);
    digitalWrite(F, HIGH);
    digitalWrite(G, HIGH);
    delay(1000);
    break;
  case 7:
    digitalWrite(A, HIGH);
    digitalWrite(B, HIGH);
    digitalWrite(C, HIGH);
    digitalWrite(D, LOW);
    digitalWrite(E, LOW);
    digitalWrite(F, LOW);
    digitalWrite(G, LOW);
    delay(1000);
    break;
  case 8:
    digitalWrite(A, HIGH);
    digitalWrite(B, HIGH);
    digitalWrite(C, HIGH);
    digitalWrite(D, HIGH);
    digitalWrite(E, HIGH);
    digitalWrite(F, HIGH);
    digitalWrite(G, HIGH);
    delay(1000);
    break;
  case 9:
    digitalWrite(A, HIGH);
    digitalWrite(B, HIGH);
    digitalWrite(C, HIGH);
    digitalWrite(D, HIGH);
    digitalWrite(E, LOW);
    digitalWrite(F, HIGH);
    digitalWrite(G, HIGH);
    delay(1000);
    break;
  default:
    digitalWrite(A, LOW);
    digitalWrite(B, LOW);
    digitalWrite(C, LOW);
    digitalWrite(D, LOW);
    digitalWrite(E, LOW);
    digitalWrite(F, LOW);
    digitalWrite(G, LOW);
    delay(1000);
    break;
  }
}