#define A 5
#define B 18
#define C 17
#define D 4
#define E 16
#define F 22
#define G 0
#define T1 19
#define T2 21

byte segmentos[9]={A,B,C,D,E,F,G,T1,T2};

void setup() {
  for(byte i=0; i<sizeof(segmentos);i++){
  pinMode(segmentos[i], OUTPUT);
  }
  digitalWrite(T1, HIGH);
  digitalWrite(T2, HIGH);
}

byte num[2]={2,3};
byte t=0;
byte velocidad=300;
byte unidad=0;
byte decena=0;
byte cont=0;

void loop() {
  cont++;
  if(cont>=5){
    unidad++;
    cont=0;
  }
  num[0]=decena;
  num[1]=unidad;
  if(unidad>9){
    unidad=0;
    decena++;
    if(decena>9){
      decena=0;
    }
  }
  /*for(byte cont=0; cont<10; cont++){
    switch(cont){
      case 0: cero();
        break;
      case 1: uno();
        break;
      case 2: dos();
        break;
      case 3: tres();
        break;
      case 4: cuatro();
        break;
      case 5: cinco();
        break;
      case 6: seis();
        break;
      case 7: siete();
        break;
      case 8: ocho();
        break;
      case 9: nueve();
        break;
    }
    delay(1000);
  }*/
  for(byte i=0; i<=1; i++){
      casos(i);
      if(t==0){
        digitalWrite(T1, LOW);
        delay(velocidad);
        digitalWrite(T1, HIGH);
        t=1;
      } else if(t==1){
        digitalWrite(T2, LOW);
        delay(velocidad);
        digitalWrite(T2, HIGH);
        t=0;
      }
  }
}
void casos(int i){
  switch(num[i]){
      case 0: cero();
        break;
      case 1: uno();
        break;
      case 2: dos();
        break;
      case 3: tres();
        break;
      case 4: cuatro();
        break;
      case 5: cinco();
        break;
      case 6: seis();
        break;
      case 7: siete();
        break;
      case 8: ocho();
        break;
      case 9: nueve();
        break;
  }
}
void cero(){
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, LOW);
}
void uno(){
  digitalWrite(A, LOW);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, LOW);
  digitalWrite(E, LOW);
  digitalWrite(F, LOW);
  digitalWrite(G, LOW);
}
void dos(){
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, LOW);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, LOW);
  digitalWrite(G, HIGH);
}
void tres(){
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, LOW);
  digitalWrite(F, LOW);
  digitalWrite(G, HIGH);
}
void cuatro(){
  digitalWrite(A, LOW);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, LOW);
  digitalWrite(E, LOW);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
}
void cinco(){
  digitalWrite(A, HIGH);
  digitalWrite(B, LOW);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, LOW);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
}
void seis(){
  digitalWrite(A, HIGH);
  digitalWrite(B, LOW);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
}
void siete(){
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, LOW);
  digitalWrite(E, LOW);
  digitalWrite(F, LOW);
  digitalWrite(G, LOW);
}
void ocho(){
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
}
void nueve(){
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, LOW);
  digitalWrite(E, LOW);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
}