// code C++ & design Logic Gates

int G1 = 2;
int Y1 = 3;
int R1 = 4;

int G2 = 5;
int Y2 = 6;
int R2 = 7;



void setup() {

  Serial.begin(9600);
  pinMode(G1, OUTPUT);
  pinMode(Y1, OUTPUT);
  pinMode(R1, OUTPUT);
  pinMode(G2, OUTPUT);
  pinMode(Y2, OUTPUT);
  pinMode(R2, OUTPUT);


}

void loop() {
  
  showYellow1();
  delay(300);
  showRed();
  delay(5000);
  showYellow2();
  delay(300);
  showGreen();
  delay(5000);
  

}

void showGreen() {
  digitalWrite(G1, HIGH);
  digitalWrite(Y1, LOW);
  digitalWrite(R1, LOW);
  digitalWrite(G2, LOW);
  digitalWrite(Y2, LOW);
  digitalWrite(R2, HIGH);
}

void showYellow1() {
  digitalWrite(G1, LOW);
  digitalWrite(Y1, HIGH);
  digitalWrite(R1, LOW);
  digitalWrite(G2, LOW);
  digitalWrite(Y2, LOW);
  digitalWrite(R2, LOW);
}

void showRed() {
  digitalWrite(G1, LOW);
  digitalWrite(Y1, LOW);
  digitalWrite(R1, HIGH);
  digitalWrite(G2, HIGH);
  digitalWrite(Y2, LOW);
  digitalWrite(R2, LOW);
  
}

void showYellow2() {
  digitalWrite(G1, LOW);
  digitalWrite(Y1, LOW);
  digitalWrite(R1, LOW);
  digitalWrite(G2, LOW);
  digitalWrite(Y2, HIGH);
  digitalWrite(R2, LOW);
}

void showOff() {
  digitalWrite(G1, LOW);
  digitalWrite(Y1, LOW);
  digitalWrite(R1, LOW);
  digitalWrite(G2, LOW);
  digitalWrite(Y2, LOW);
  digitalWrite(R2, LOW);
}