O Level Exam : Practical Question
📝 HTML
🎨 CSS
⚡ Java Script
void setup() { Serial.begin(9600); pinMode(13,OUTPUT); pinMode(12,OUTPUT); pinMode(11,OUTPUT); } void loop() { char ch; if(Serial.available()) { ch=Serial.read(); Serial.print(ch); if(ch=='r'||ch=='R') { digitalWrite(13,HIGH); digitalWrite(12,LOW); digitalWrite(11,LOW); } else if(ch=='g'||ch=='G') { digitalWrite(13,LOW); digitalWrite(12,HIGH); digitalWrite(11,LOW); } else if(ch=='y' ||ch=='Y' ) { digitalWrite(13,LOW); digitalWrite(12,LOW); digitalWrite(11,HIGH); } } }
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🖥 Output: