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VIDEO SESSION Century #Digital Literacy
Skills
Scan the QR code or visit the following link to watch the video:
What is a Microcontroller and how does it work? Robotics for Beginners Tutorial

https://www.youtube.com/watch?v=t68MG-kVDCU
After watching the video, answer the following questions:
1. How do microcontrollers function in everyday devices?

2. Name and explain the three main components of a microcontroller.

What is a Single Board Computer (SBC)?

A Single Board Computer is a complete computer built on a single circuit board. Unlike a microcontroller, it’s designed to
be a general-purpose computer capable of running full operating systems (like Linux) and handling more complex tasks,
often with more processing power, memory, and connectivity options. They are like a desktop computer condensed onto
a small board.

Understanding the Block Diagram and Architecture
Both microcontrollers and single board computers share common fundamental architectural blocks, though their
complexity and capabilities vary significantly. Let’s explore these blocks:

Central Processing Unit (CPU) / Processor
Description: This is the ‘brain’ of the microcontroller or single board computer. It’s responsible for executing the program
instructions, performing arithmetic calculations (like addition, subtraction), logical operations (like AND, OR, NOT), and
managing the flow of data.
Working Principle: The Central Processing Unit continuously fetches instructions from memory, decodes them, and then
executes them step-by-step.
Difference: Microcontrollers typically have simpler, lower-power Central Processing Units optimised for control tasks.
Single Board Computers have much more powerful Central Processing Units, often with multiple processing cores,
capable of handling demanding computations like image processing for computer vision or running complex Artificial
Intelligence algorithms.
Analogy: The Central Processing Unit is like the main decision-making part of your own brain.

Memory
Description: Memory is where the microcontroller or single board computer stores programs (instructions) and data.
There are typically different types of memory for different purposes.
Types:
Program Memory (Flash Memory / Read-Only Memory - ROM): This is where the actual program (the set of
instructions you write for the robot) is permanently stored. It retains data even when the power is off, similar to your
computer’s hard drive.
Data Memory (Random Access Memory - RAM): This is where the microcontroller stores temporary data that it needs
to access and modify quickly while the program is running. This data is lost when the power is turned off. Examples include
sensor readings, intermediate calculation results, or variable values.

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