งานปฏิบัติ 2

Code

int led1 = 9;

int led2 = 10;

int led3 = 11;

int led4 = 12;

void setup ()

{

  pinMode(led1,OUTPUT);

  pinMode(led2,OUTPUT);

  pinMode(led3,OUTPUT);

  pinMode(led4,OUTPUT);

}

void loop()

{

  digitalWrite(led1,HIGH);

  digitalWrite(led2,LOW);

  digitalWrite(led3,LOW);

  digitalWrite(led4,LOW);

  delay(1000);

  digitalWrite(led1,LOW);

  digitalWrite(led2,HIGH);

  digitalWrite(led3,LOW);

  digitalWrite(led4,LOW);

  delay(1000);

  digitalWrite(led1,LOW);

  digitalWrite(led2,LOW);

  digitalWrite(led3,HIGH);

  digitalWrite(led4,LOW);

  delay(1000);

  digitalWrite(led1,LOW);

  digitalWrite(led2,LOW);

  digitalWrite(led3,LOW);

  digitalWrite(led4,HIGH);

  delay(1000);

}