งานที่2

int led1 = 7;int led2 = 6;int led3 = 5;int led4 = 4; 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); }