#define led_A 2 
#define led_B 3
#define led_C 4
#define led_D 5
#define led_E 6
#define led_F 7
#define led_G 8

void setup()  
  {
  pinMode(led_A ,OUTPUT);
  pinMode(led_B ,OUTPUT);
  pinMode(led_C ,OUTPUT);
  pinMode(led_D ,OUTPUT);
  pinMode(led_E ,OUTPUT);
  pinMode(led_F ,OUTPUT);
  pinMode(led_G ,OUTPUT);
  }

void zero()
{
  digitalWrite(led_A,HIGH); 
  digitalWrite(led_B,HIGH);
  digitalWrite(led_C,HIGH);
  digitalWrite(led_D,HIGH);
  digitalWrite(led_E,HIGH);
  digitalWrite(led_F,HIGH);
  digitalWrite(led_G,LOW);
  delay(500);
}
void one()
  digitalWrite(led_A,LOW); 
  digitalWrite(led_B,HIGH);
  digitalWrite(led_C,HIGH);
  digitalWrite(led_D,LOW);
  digitalWrite(led_E,LOW);
  digitalWrite(led_F,LOW);
  digitalWrite(led_G,LOW);
  delay(500);

  digitalWrite(led_A,HIGH); 
  digitalWrite(led_B,HIGH);
  digitalWrite(led_C,LOW);
  digitalWrite(led_D,HIGH);
  digitalWrite(led_E,HIGH);
  digitalWrite(led_F,LOW);
  digitalWrite(led_G,HIGH);
  delay(500);

  digitalWrite(led_A,HIGH); 
  digitalWrite(led_B,HIGH);
  digitalWrite(led_C,HIGH);
  digitalWrite(led_D,HIGH);
  digitalWrite(led_E,LOW);
  digitalWrite(led_F,LOW);
  digitalWrite(led_G,HIGH);
  delay(500);
   
  digitalWrite(led_A,LOW); 
  digitalWrite(led_B,HIGH);
  digitalWrite(led_C,HIGH);
  digitalWrite(led_D,LOW);
  digitalWrite(led_E,LOW);
  digitalWrite(led_F,HIGH);
  digitalWrite(led_G,HIGH);
  delay(500);
  
  digitalWrite(led_A,HIGH); 
  digitalWrite(led_B,LOW);
  digitalWrite(led_C,HIGH);
  digitalWrite(led_D,HIGH);
  digitalWrite(led_E,LOW);
  digitalWrite(led_F,HIGH);
  digitalWrite(led_G,HIGH);
  delay(500);

  digitalWrite(led_A,HIGH); 
  digitalWrite(led_B,LOW);
  digitalWrite(led_C,HIGH);
  digitalWrite(led_D,HIGH);
  digitalWrite(led_E,HIGH);
  digitalWrite(led_F,HIGH);
  digitalWrite(led_G,HIGH);
  delay(500);

  digitalWrite(led_A,HIGH); 
  digitalWrite(led_B,HIGH);
  digitalWrite(led_C,HIGH);
  digitalWrite(led_D,LOW);
  digitalWrite(led_E,LOW);
  digitalWrite(led_F,LOW);
  digitalWrite(led_G,LOW);
  delay(500);
  
  digitalWrite(led_A,HIGH); 
  digitalWrite(led_B,HIGH);
  digitalWrite(led_C,HIGH);
  digitalWrite(led_D,HIGH);
  digitalWrite(led_E,HIGH);
  digitalWrite(led_F,HIGH);
  digitalWrite(led_G,HIGH);
  delay(500);
  
  digitalWrite(led_A,HIGH); 
  digitalWrite(led_B,HIGH);
  digitalWrite(led_C,HIGH);
  digitalWrite(led_D,HIGH);
  digitalWrite(led_E,LOW);
  digitalWrite(led_F,HIGH);
  digitalWrite(led_G,HIGH);
  delay(500);
  
  
  digitalWrite(led_A,HIGH); 
  digitalWrite(led_B,HIGH);
  digitalWrite(led_C,HIGH);
  digitalWrite(led_D,HIGH);
  digitalWrite(led_E,HIGH);
  digitalWrite(led_F,LOW);
  digitalWrite(led_G,HIGH);
  delay(500);
  
  digitalWrite(led_A,LOW); 
  digitalWrite(led_B,LOW);
  digitalWrite(led_C,HIGH);
  digitalWrite(led_D,HIGH);
  digitalWrite(led_E,HIGH);
  digitalWrite(led_F,HIGH);
  digitalWrite(led_G,HIGH);
  delay(500);
  
  
  digitalWrite(led_A,LOW); 
  digitalWrite(led_B,LOW);
  digitalWrite(led_C,LOW);
  digitalWrite(led_D,HIGH);
  digitalWrite(led_E,HIGH);
  digitalWrite(led_F,LOW);
  digitalWrite(led_G,HIGH);
  delay(500);

  digitalWrite(led_A,LOW); 
  digitalWrite(led_B,HIGH);
  digitalWrite(led_C,HIGH);
  digitalWrite(led_D,HIGH);
  digitalWrite(led_E,HIGH);
  digitalWrite(led_F,LOW);
  digitalWrite(led_G,HIGH);
  delay(500);

  digitalWrite(led_A,HIGH); 
  digitalWrite(led_B,LOW);
  digitalWrite(led_C,LOW);
  digitalWrite(led_D,HIGH);
  digitalWrite(led_E,HIGH);
  digitalWrite(led_F,HIGH);
  digitalWrite(led_G,HIGH);
  delay(500);
  
  digitalWrite(led_A,HIGH); 
  digitalWrite(led_B,LOW);
  digitalWrite(led_C,LOW);
  digitalWrite(led_D,LOW);
  digitalWrite(led_E,HIGH);
  digitalWrite(led_F,HIGH);
  digitalWrite(led_G,HIGH);
  delay(500);
  }