Arduino Week 4 Review

Which keyword is used to start a for loop in Arduino programming?

• A) do

• B) for

• C) while

• D) loop

What function is used to configure a pin as an output in Arduino?

• A) digitalRead

• B) analogWrite

• C) pinMode

• D) attachInterrupt

What does the HIGH state represent in Arduino programming?

• 0V being sent to a PIN

• 5V being sent to a PIN

• an instruction to turn on

• a measurement of the potential of the device

How is a delay specified in Arduino?

• A) Milliseconds

• B) Microseconds

• C) Seconds

• D) Nanoseconds

In Arduino, what function is used to set a pin to output a high or low voltage?

• A) digitalWrite

• B) analogRead

• C) attachInterrupt

• D) pinMode

Which statement correctly defines a for loop that iterates 5 times?

• A) for (int i = 1; i <= 5; i++)

• B) for (int i = 1; i < 6; i++)

• C) for (int i = 0; i < 5; i++)

• D) for (int i = 0; i <= 5; i++)

What does the LOW state represent in Arduino programming?

• A) 0V being sent to a PIN

• B) 5V being sent to a PIN

• C) an instruction to turn off

• D) a measurement of the potential of the device

Which Arduino function is used to write an analog value (PWM signal) to a pin?

• analogWrite

• digitalWrite

• • analogRead

• pinMode

Answer explanation

analogWrite is used to output a PWM (Pulse Width Modulation) signal to a pin, allowing for the simulation of analog output levels.

What is the range of values that can be passed to the analogWrite() function in Arduino Uno?

• 0 to 1

• 0 to 5

• 0 to 255

• 0 to 1023

Answer explanation

In Arduino Uno, the analogWrite() function accepts values in the range of 0 to 255, representing the duty cycle of the PWM signal.

What symbol on the arduino uno board indicates that the pin accepts PWM commands?

• tilde '~'

• Period '.'

• semicolon ';'

• colon ':'

Answer explanation

On the arduino board the pins 3, 5, 6, 9, 10 and 11 are marked with the '~' indicating that they can be used with PWM.