PIF-Week 5

What is the primary function of a microcontroller?

• Perform complex calculations in a computer
• Store and retrieve large amounts of data
• Display information on a screen
• Control the behavior of electronic devices
• Connect to the internet

Which of the following is NOT a key component of a microcontroller?

• CPU (Central Processing Unit)
• ALU (Arithmetic Logic Unit)
• Memory (RAM, ROM)
• Keyboard
• Input/Output peripherals

What is the purpose of the Arduino setup() function?

• Execute code repeatedly
• Read data from sensors
• Control the brightness of an LED
• Initialize variables and settings once at the beginning
• Define a function for later use

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

• digitalRead()
• digitalWrite()
• pinMode()
• delay()
• Serial.print()

What does the following code do? <br> digitalWrite(13, HIGH);

• Reads the state of digital pin 13
• Sets digital pin 13 to high (turns on an LED connected to pin 13)
• Sets digital pin 13 to low
• Configures digital pin 13 as an input
• Prints the value of pin 13 to the serial monitor

Which function is used to read the value of an analog pin in Arduino?

• digitalRead()
• analogRead()
• pinMode()
• digitalWrite()
• delay()

What is the purpose of the delay() function in Arduino?

• Read data from a sensor
• Print output to the serial monitor
• Pause the program execution for a specified time
• Define a function
• Control the brightness of an LED

What is the correct way to declare a constant variable named "LED_PIN" with a value of 9 in Arduino?

• const int LED_PIN = 9;
• int const LED_PIN = 9;
• #define LED_PIN 9
• All of the above
• None of the above

Which operator is used to check if two values are NOT equal in Arduino?

• #ERROR!
• #ERROR!
• !=
• >
• <

What is the purpose of a comment in Arduino code?

• Tell the Arduino what to do
• Make the code look nicer
• Explain the code to humans
• Store data
• None of the above