Arduino Signals and Programming Quiz

Which technique does Arduino use to generate analogue signals?

• Pulse width modulation (PWM)

• Amplitude modulation

• Frequency modulation

• Square wave modulation

Which value corresponds to a 100% duty cycle in PWM?

• 255

• 200

• 500

• 128

What programming language does Arduino use for sketch development?

• Java

• JavaScript

• Python

• C/C++

Which function is required to establish a serial communication with the Arduino board?

• Serial.begin(9600);

• Serial.init(9600);

• Serial.start(9600);

• Serial.send(9600);

In which part of the Arduino code should Serial.begin be written?

• void setup():

• void main():

• void loop():

• void start():

What does the statement Serial.println(…); do in Arduino?

• It converts data to a string.

• It initializes the serial communication.

• It sends data without starting a new line.

• It sends data and moves to a new line on the display.

What is the output of Serial.println(5+1); on the monitor?

• 5

• 1

• 5+1

• 6

Which statement accurately defines a variable in programming?

• A temporary placeholder for function results.

• A memory storage unit where data is kept.

• A permanent storage location in memory.

• A type of data structure in arrays.

What data type would 0.5 be classified as?

• char

• bool

• float

• int

What will be the output when executing Serial.print("5+1");?

• The literal string 5+1

• 5 + 1

• 6

• The number 5 and then 1