Q1. What is Arduino often called?
A1. Arduino is often called the “brain” of a smart machine.

Q2. Which pins are used to connect sensors—Analog or Digital?
A2. Analog pins (A0–A5) are usually used for sensors that give varying values (like temperature or light).

Q3. What is the function of Digital pins?
A3. Digital pins act like on/off switches for sensors and outputs (like LEDs, motors, or buzzers).

Q4. How do we connect Arduino to a computer for coding?
A4. Using the USB port on the Arduino Uno board.