const int A =5;
const int B =6;
const int C =7;
const int D =8;
const int E =9;
const int F =10;
const int G =11;
const int COM =12;
const int DP =13;

void setup() {
  // put your setup code here, to run once:
pinMode(A, OUTPUT);
pinMode(B, OUTPUT);
pinMode(C , OUTPUT);
pinMode(D , OUTPUT);
pinMode(E , OUTPUT);
pinMode(F , OUTPUT);
pinMode(G , OUTPUT);
pinMode(COM , OUTPUT);
pinMode(DP , OUTPUT);

pinMode(A0, OUTPUT);
pinMode(A1, OUTPUT);
pinMode(A2, OUTPUT);
pinMode(A3, OUTPUT);

pinMode(4, INPUT_PULLUP);
pinMode(3, INPUT_PULLUP);
pinMode(2, INPUT_PULLUP);
pinMode(1, INPUT_PULLUP);
}

void loop() {
  // put your main code here, to run repeatedl
digitalWrite(A3, LOW);
digitalWrite(A2, HIGH);
digitalWrite(A1, HIGH);
digitalWrite(A0, HIGH);

if(!digitalRead(4)){
  digitalWrite(A, HIGH);
  digitalWrite(B, LOW);
  digitalWrite(C, LOW);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);
  delay(1000);
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);
}
delay(1);

digitalWrite(A3, HIGH);
digitalWrite(A2, LOW);
digitalWrite(A1, HIGH);
digitalWrite(A0, HIGH);

if(!digitalRead(4)){
  digitalWrite(A, LOW);
  digitalWrite(B, LOW);
  digitalWrite(C, HIGH);
  digitalWrite(D, LOW);
  digitalWrite(E, LOW);
  digitalWrite(F, HIGH);
  digitalWrite(G, LOW);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);
  delay(1000);
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);

}
delay(1);

digitalWrite(A3, HIGH);
digitalWrite(A2, HIGH);
digitalWrite(A1, LOW);
digitalWrite(A0, HIGH);

if(!digitalRead(4)){
  digitalWrite(A, LOW);
  digitalWrite(B, LOW);
  digitalWrite(C, LOW);
  digitalWrite(D, LOW);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, LOW);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);
  delay(1000);
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);

}
delay(1);

digitalWrite(A3, LOW);
digitalWrite(A2, HIGH);
digitalWrite(A1, HIGH);
digitalWrite(A0, HIGH);

if(!digitalRead(3)){
  digitalWrite(A, HIGH);
  digitalWrite(B, LOW);
  digitalWrite(C, LOW);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, LOW);
  digitalWrite(G, LOW);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);
  delay(1000);
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);

}
delay(1);

digitalWrite(A3, HIGH);
digitalWrite(A2, LOW);
digitalWrite(A1, HIGH);
digitalWrite(A0, HIGH);

if(!digitalRead(3)){
  digitalWrite(A, LOW);
  digitalWrite(B, HIGH);
  digitalWrite(C, LOW);
  digitalWrite(D, LOW);
  digitalWrite(E, HIGH);
  digitalWrite(F, LOW);
  digitalWrite(G, LOW);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);
  delay(1000);
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);

}
delay(1);

digitalWrite(A3, HIGH);
digitalWrite(A2, HIGH);
digitalWrite(A1, LOW);
digitalWrite(A0, HIGH);

if(!digitalRead(3)){
  digitalWrite(A, LOW);
  digitalWrite(B, HIGH);
  digitalWrite(C, LOW);
  digitalWrite(D, LOW);
  digitalWrite(E, LOW);
  digitalWrite(F, LOW);
  digitalWrite(G, LOW);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);
  delay(1000);
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);

}
delay(1);

digitalWrite(A3, LOW);
digitalWrite(A2, HIGH);
digitalWrite(A1, HIGH);
digitalWrite(A0, HIGH);

if(!digitalRead(2)){
  digitalWrite(A, LOW);
  digitalWrite(B, LOW);
  digitalWrite(C, LOW);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);
  delay(1000);
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);

}
delay(1);

digitalWrite(A3, HIGH);
digitalWrite(A2, LOW);
digitalWrite(A1, HIGH);
digitalWrite(A0, HIGH);

if(!digitalRead(2)){
  digitalWrite(A, LOW);
  digitalWrite(B, LOW);
  digitalWrite(C, LOW);
  digitalWrite(D, LOW);
  digitalWrite(E, LOW);
  digitalWrite(F, LOW);
  digitalWrite(G, LOW);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);
  delay(1000);
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);

}
delay(1);

digitalWrite(A3, HIGH);
digitalWrite(A2, HIGH);
digitalWrite(A1, LOW);
digitalWrite(A0, HIGH);

if(!digitalRead(2)){
  digitalWrite(A, LOW);
  digitalWrite(B, LOW);
  digitalWrite(C, LOW);
  digitalWrite(D, LOW);
  digitalWrite(E, HIGH);
  digitalWrite(F, LOW);
  digitalWrite(G, LOW);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);
  delay(1000);
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);

}
delay(1);

digitalWrite(A3, HIGH);
digitalWrite(A2, LOW);
digitalWrite(A1, HIGH);
digitalWrite(A0, HIGH);

if(!digitalRead(1)){
  digitalWrite(A, LOW);
  digitalWrite(B, LOW);
  digitalWrite(C, LOW);
  digitalWrite(D, LOW);
  digitalWrite(E, LOW);
  digitalWrite(F, LOW);
  digitalWrite(G, HIGH);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);
  delay(1000);
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);

}
delay(1);

digitalWrite(A3, LOW);
digitalWrite(A2, HIGH);
digitalWrite(A1, HIGH);
digitalWrite(A0, HIGH);

if(!digitalRead(1)){
  digitalWrite(A, HIGH);
  digitalWrite(B, LOW);
  digitalWrite(C, LOW);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);
  delay(500);
  digitalWrite(A, LOW);
  digitalWrite(B, LOW);
  digitalWrite(C, LOW);
  digitalWrite(D, LOW);
  digitalWrite(E, LOW);
  digitalWrite(F, LOW);
  digitalWrite(G, LOW);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);
  delay(500);
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
  digitalWrite(COM, HIGH);
  digitalWrite(DP, HIGH);

}
delay(1);


}