Arduino Programming Quiz

What is the definition of a digital signal?

• Analog values converted to digital

• Continuous values within a range

• Discrete values represented as HIGH (1) or LOW (0)

• Variable voltage/current

Which of the following is an example of a digital sensor?

• Light sensor

• Button

• Temperature sensor

• Potentiometer

What does the analogRead() function do?

• Writes a HIGH or LOW value to a digital pin

• Reads the value from a specified analog pin

• Configures a pin as input or output

• Pauses the program for a specified time

What is the purpose of the setup() function in an Arduino sketch?

• Reads incoming serial data

• Runs repeatedly after setup

• Writes data to the serial port

• Initializes variables and sets pin modes

Which command is used to write a HIGH value to a digital pin?

• pinMode(pin, mode)

• analogWrite(pin, value)

• digitalWrite(pin, value)

• digitalRead(pin)

What is the range of values returned by analogRead() for a 10-bit ADC?

• 0 to 255

• 0 to 1023

• 0 to 4095

• 0 to 512

What does the delay(ms) function do?

• Pauses the program for a specified time

• Initializes serial communication

• Configures a pin as input or output

• Reads the value from a digital pin

Which of the following is NOT a characteristic of an analog signal?

• Continuous values

• Variable voltage/current

• Discrete values

• Infinite possible values within a range

What is the purpose of the Serial.begin(baud) function?

• Writes data to a digital pin

• Initializes serial communication at a specified baud rate

• Reads incoming serial data

• Pauses the program for a specified time

Which function is used to configure a pin as an output?

• digitalRead(pin)

• Serial.print(val)

• pinMode(pin, mode)

• analogWrite(pin, value)