4 Arduino: Digital Inputs

What is the function of 'pinMode(6, OUTPUT);' in the setup function?

• It sets the 6 pin as an input.

• It sets the 6 pin as an output.

• It sets the 6 pin as a pull-up resistor.

• It sets the 6 pin as a pull-down resistor.

What is the role of 'digitalWrite(grnLED, LOW);' in the loop function?

• It turns the LED on.

• It blinks the LED.

• It turns the LED off.

• It changes the LED color.

What is the initial state of the grnLED when button A is not pressed?

• ON

• OFF

• BLINKING

• DIM

What is the effect of adding a delay in the loop function?

• It speeds up the program

• It slows down the program

• It has no effect

• It stops the program

What happens if you do not start serial communication in the setup function?

• The program runs faster

• The program runs slower

• The Serial Monitor will not display messages

• The LEDs will not turn on

What is a digital device?

• A device that only has two states: on or off/high or low

• A device that has many states: usually anywhere from 0 to 225

• A device that connects to the internet or to a computer

• A clock

What is an analog device?

• A device that only has two states: on or off/high or low

• A device that has many states: usually anywhere from 0 to 225

• A TV

• A clock

What does the line of code digitalWrite() do?

• It sets an analog device to either a high or low state

• It sets an analog device to any state from 0 to 255

• It sets a digital device to either a high or low state

• It sets a digital device to any state from 0 to 255

What does the line of code analogWrite() do?

• It sets an analog device to either a high or low state

• It sets an analog device to any state from 0 to 255

• It sets a digital device to either a high or low state

• It sets a digital device to any state from 0 to 255

What does the line pinMode() do?

• It turns on or off an input or output device

• It sets an input or output device to any state from 0 to 255

• It places an input or output device in a loop

• It defines whether a device is input or output and what pin it is on