Push Button LED-digitalRead and digitalWrite

What does pinMode(2, INPUT); do?

• It turns on the LED.

• It tells the computer that pin 2 is connected to a button.

• It makes the button glow.

• It turns off the LED.

What happens when the button is pressed?

• The LED turns off.

• The LED turns on.

• The button glows.

• Nothing happens.

What does digitalWrite(13, HIGH); do?

• It turns off the LED.

• It checks if the button is pressed.

• It turns on the LED.

• It makes the button glow.

What is the purpose of delay(15);?

• To make the LED blink faster.

• To add a tiny pause so the computer doesn’t check too fast.

• To turn off the button.

• To make the LED brighter.

What does button_state = digitalRead(2); do?

• It turns on the LED.

• It checks if the button is pressed or not.

• It makes the button glow.

• It turns off the LED.

What is the role of the LED in this code?

• To act as a button.

• To light up when the button is pressed.

• To check if the button is working.

• To make the button glow.

What does if (button_state == HIGH) mean?

• If the button is not pressed.

• If the button is pressed.

• If the LED is off.

• If the LED is on.

What happens if the button is not pressed?

• The LED turns on.

• The LED turns off.

• The button glows.

• The computer stops working.

What is the purpose of pinMode(13, OUTPUT);?

• To connect the button to pin 13.

• To tell the computer that pin 13 is connected to the LED.

• To turn off the LED.

• To make the button glow.

What does int button_state = 0; do?

• It turns on the LED.

• It creates a memory box to store whether the button is pressed or not.

• It makes the button glow.

• It turns off the LED.