int a=2;
int b=3;
int c=4;
int d=5;
int e=6;
int f=7;
int g=8;
void setup() {
  pinMode(a, OUTPUT);
  pinMode(b, OUTPUT);
  pinMode(c, OUTPUT);
  pinMode(d, OUTPUT);
  pinMode(e, OUTPUT);
  pinMode(f, OUTPUT);
  pinMode(g, OUTPUT);
  // put your setup code here, to run once:
//digitalWrite(a, HIGH);
Num1();
delay(1000);
Num2();
delay(1000);
Num3();
delay(1000);
Num4();
delay(1000);
Num5();
delay(1000);
Num6();
delay(1000);
Num7();
delay(1000);
Num8();
delay(1000);
Num9();
delay(1000);
}

void loop() {
  // put your main code here, to run repeatedly:

}
void clearNum(){
  digitalWrite(a,0);
    digitalWrite(b,0);
  digitalWrite(c,0);
    digitalWrite(d,0);
      digitalWrite(e,0);
        digitalWrite(f,0);
          digitalWrite(g,0);
}
void Num1(){
  clearNum();
  digitalWrite(b, HIGH);
  digitalWrite(c, HIGH);
}
void Num2(){
  clearNum();
  digitalWrite(a,HIGH);
  digitalWrite(b,HIGH);
  digitalWrite(g,HIGH);
  digitalWrite(e,HIGH);
  digitalWrite(d,HIGH);
}
void Num3(){
    clearNum();
   digitalWrite(a,HIGH);
    digitalWrite(b,HIGH);
     digitalWrite(g,HIGH);
      digitalWrite(c,HIGH);
       digitalWrite(d,HIGH);    
}
void Num4(){
    clearNum();
   digitalWrite(b,HIGH);
    digitalWrite(f,HIGH);
     digitalWrite(g,HIGH);
      digitalWrite(c,HIGH);   
}
void Num5(){
    clearNum();
   digitalWrite(a,HIGH);
    digitalWrite(f,HIGH);
     digitalWrite(g,HIGH);
      digitalWrite(c,HIGH);
       digitalWrite(d,HIGH); 
         
}
void Num6(){
    clearNum();
   digitalWrite(a,HIGH);
    digitalWrite(f,HIGH);
     digitalWrite(g,HIGH);
      digitalWrite(c,HIGH);
       digitalWrite(d,HIGH);
       digitalWrite(e,HIGH);
}
void Num7(){
    clearNum();
   digitalWrite(a,HIGH);
    digitalWrite(b,HIGH);
     digitalWrite(c,HIGH);
      
}
void Num8(){
  clearNum();
  digitalWrite(a, HIGH);
  digitalWrite(b, HIGH);
  digitalWrite(c, HIGH);
  digitalWrite(d, HIGH);
  digitalWrite(e, HIGH);
  digitalWrite(f, HIGH);
  digitalWrite(g, HIGH);
}
void Num9(){
    clearNum();
   digitalWrite(a,HIGH);
    digitalWrite(f,HIGH);
     digitalWrite(g,HIGH);
      digitalWrite(c,HIGH);
       digitalWrite(d,HIGH);
       digitalWrite(b,HIGH);
}