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Questions
























Design an interface showing the street traffic signal programmed to keep red light for 30 secs and green light for 60 secs.

Last Updated : 16 Jul 2025

Solution:

void setup(){
    pinMode(10, OUTPUT);  // RED LED = pin 10
    pinMode(11, OUTPUT);  // GREEN LED = pin 11
}

void loop(){
    digitalWrite(10, HIGH);  // Turn on the RED LED
    delay(30000);            // Wait for 30 seconds
    digitalWrite(10, LOW);   // Turn off the RED LED

    digitalWrite(11, HIGH);  // Turn on the GREEN LED
    delay(60000);            // Wait for 60 seconds
    digitalWrite(11, LOW);   // Turn off the GREEN LED
}
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