Checkpoint 2 - Revision

Refer to the image shown below. Which of the following Arduino commands is used to initialize pin ‘8’ as an OUTPUT?

• digitalWrite(8, OUTPUT)

• pinMode(8, HIGH)

• pinMode(8, OUTPUT)

• analogRead(8)

How can we write (A = A + 1) in Arduino syntax?

• A++

• A+=B

• A--

• A*=B

How can we write (A = A - 1) in Arduino syntax?

• A++

• A+=B

• A--

• A*=B

How can we write (A = A * B) in Arduino syntax?

• A++

• A+=B

• A--

• A*=B

How can we write (A = A + B) in Arduino syntax?

• A++

• A+=B

• A--

• A*=B

What do we call an electrical signal that represents information in the pattern of bits (0s and 1s)?

• Analogue signals

• Continuous signals

• Digital signals

• FM radio signals

What do we call a continuous signal with an infinite number of possibilities?

• Analogue signals

• Discrete signals

• Digital signals

• Optical drives

Which of the following is a digital input component?

• Servo Motor

• Pushbutton

• Potentiometer

• Buzzer

Which of the following Arduino functions is used to generate a PWM signal?

• analogRead();

• digitalWrite();

• analogWrite();

• digitalRead();

Which of the following is an electric device that converts electrical energy into mechanical energy using a direct current power source?

• LED

• DC motor

• Ultrasonic sensor

• 9V Battery