3. GPIO Programming

Discussions4

TonyGuyotApr 20 2026

I was confused by this one, but when looking at the solution I'm even more confused!

It is first written: "Correct Options: 1), 3) and 4)",
and then later on: "Thus, option 2 is true, and options 1, 3, and 4 are false."

Needs to be fixed.

DEVAMGORMar 24 2026

i dont know am i wrong or the solution is wrong here?

D22CQVTNTRANKYHIEPApr 01 2026

The LED pin will always be in a HIGH state, causing the LED to remain OFF. However, that is when button 1 is not pressed. If button 1 is pressed, both inputs become LOW, satisfying the low-level input condition, and the LED will turn ON.

ValeriiPlatonovMay 20 2026

Solution is wrong. AND gate 2 has g1 & g3 connection

please fix it

Select Answer

void setup() {
  pinMode(13, OUTPUT);
}

void loop() {
  digitalWrite(13, LOW);
}

void setup() {
  pinMode(13, OUTPUT);
}

void loop() {
  digitalWrite(13, HIGH);
}

void setup() {
  pinMode(13, INPUT);
}

void loop() {
  digitalWrite(13, HIGH);
}

void setup() {
  pinMode(13, INPUT_PULLUP);
}

void loop() {
  digitalWrite(13, HIGH);
}