24/25_ODD_IOT_ARDUINO ARCHITECTURE

What is the primary function of a microcontroller?

• To provide high-speed internet connectivity.

• To store large amounts of data in a database.

• The primary function of a microcontroller is to control and manage specific tasks in embedded systems.

• To serve as a general-purpose computer for gaming.

Name one common microcontroller used in Arduino boards.

• Raspberry Pi Pico

• MSP430

• PIC16F84

• ATmega328P

What is the purpose of digital pins on an Arduino?

• To store analog signals for processing.

• To connect to the internet wirelessly.

• The purpose of digital pins on an Arduino is to read and send digital signals.

• To provide power to the Arduino board.

How do analog pins differ from digital pins?

• Analog pins can only read digital signals; digital pins can read varying voltage levels.

• Analog pins are used for power supply; digital pins are used for data transmission.

• Analog pins operate at a fixed voltage; digital pins can vary their voltage levels.

• Analog pins read varying voltage levels; digital pins read only high or low states.

What programming language is primarily used in the Arduino IDE?

• Python

• Java

• C++

• JavaScript

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

• The setup() function handles user input from the serial monitor.

• The setup() function is used to read sensor data.

• The setup() function runs the main loop of the program.

• The setup() function initializes the Arduino environment.

How can you read data from a temperature sensor using Arduino?

• Use a multimeter to measure voltage directly

• Connect the sensor without a library

• Read data only once at startup

• Connect the sensor, use the appropriate library, initialize it, and read data in the loop.

What is the purpose of a resistor when connecting a sensor to an Arduino?

• To amplify the signal from the sensor.

• To increase the voltage supplied to the sensor.

• To limit current and protect the Arduino from excessive voltage.

• To provide a direct connection between the sensor and the Arduino.

Explain the role of libraries in Arduino programming.

• Libraries are only used for storing data files.

• Libraries are unnecessary for basic Arduino projects.

• Libraries complicate the programming process by adding extra steps.

• Libraries streamline Arduino programming by providing reusable code for hardware control and simplifying complex tasks.

What is the significance of the loop() function in an Arduino program?

• The loop() function is responsible for setting up the hardware components.

• The loop() function is essential for executing the main program logic repeatedly.

• The loop() function is optional and can be omitted in simple programs.

• The loop() function is used to initialize variables only once.