// Tutorial on 7 Segement Display

const char A = 1;
const char B = 2;
const char C = 3;
const char D = 4;
const char E = 5;
const char F = 6;
const char G = 7;
const char DP = 8;

void setup() {                
  pinMode(A, OUTPUT); //Segment a
  pinMode(B, OUTPUT); //Segment b
  pinMode(C, OUTPUT); //Segment c
  pinMode(D, OUTPUT); //Segment d
  pinMode(E, OUTPUT); //Segment e
  pinMode(F, OUTPUT); //Segment f
  pinMode(G, OUTPUT); //Segment g
  pinMode(DP, OUTPUT); //Dott point
}

void loop() {
  two();
  delay(1000);              
  five();
  delay(1000);  
  seven();
  delay(1000);            
}

//Make the number seven
void seven(){
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, LOW);
  digitalWrite(E, LOW);
  digitalWrite(F, LOW);
  digitalWrite(G, LOW);
  digitalWrite(DP, LOW); 
}

//Make the number tow
void two(){
  digitalWrite(A, LOW);
  digitalWrite(B, LOW);
  digitalWrite(C, HIGH);
  digitalWrite(D, LOW);
  digitalWrite(E, LOW);
  digitalWrite(F, HIGH);
  digitalWrite(G, LOW);
  digitalWrite(DP, HIGH);  
}

//Make the number five
void five(){
  digitalWrite(A, LOW);
  digitalWrite(B, HIGH);
  digitalWrite(C, LOW);
  digitalWrite(D, LOW);
  digitalWrite(E, HIGH);
  digitalWrite(F, LOW);
  digitalWrite(G, LOW);
  digitalWrite(DP, HIGH);  
}