Ardunio_Case_3_Homework_traffic_light

 int red = 8;
 int yellow = 9;
 int green = 10;
 void setup() {
   // put your setup code here, to run once:
   pinMode(red,OUTPUT);
   pinMode(yellow,OUTPUT);
   pinMode(green,OUTPUT);
 }

 void loop() {
   // put your main code here, to run repeatedly:
   digitalWrite(red,HIGH);
   delay(5000);
   digitalWrite(red,LOW);

   digitalWrite(yellow,HIGH);
   delay(2000);
   digitalWrite(yellow,LOW);

   digitalWrite(green,HIGH);
   delay(5000);
   digitalWrite(green,LOW);

   digitalWrite(yellow,HIGH);
   delay(2000);
   digitalWrite(yellow,LOW);
 }