Arduino PRP4 Quiz

What is the purpose of the `pinMode` function in the setup section of the code?

• To read the value from the pin

• To initialise the pin as an input or output

• To play a tone on the pin

• To delay the execution of the code

Which digital pin is the buzzer connected to in the ThinkerShield?

• Pin 2

• Pin 3

• Pin 4

• Pin 5

What is the frequency of the tone played by the buzzer in the code?

• 440 Hz

• 523 Hz

• 659 Hz

• 880 Hz

How long does the tone play for each time it is activated in the loop?

• 10 milliseconds

• 20 milliseconds

• 50 milliseconds

• 100 milliseconds

What is the purpose of the `delay(200)` function in the loop?

• To stop the tone from playing

• To pause the program for 200 milliseconds

• To change the frequency of the tone

• To initialise the buzzer pin

What is the role of the `tone` function in the code?

• To initialise the buzzer pin

• To set the pin mode

• To play a sound on the buzzer

• To stop the buzzer from playing

In which section of the code is the `pinMode` function called?

• Inside the loop function

• Inside the setup function

• Outside any function

• Inside the tone function

What is the main purpose of the `setup` function in an Arduino sketch?

• To run continuously

• To initialise settings before the loop starts

• To play sounds

• To delay the program

What is the main purpose of the `loop` function in an Arduino sketch?

• To run once and stop

• To initialise settings

• To run continuously

• To set pin modes

What is the correct syntax to define a pin as an output in Arduino?

• `pinMode(pin, INPUT);`

• `pinMode(pin, OUTPUT);`

• `digitalWrite(pin, HIGH);`

• `digitalRead(pin);`