Class 2 Computer
Learn how computers and machines work, explore computer hardware, input and output devices, files and folders, desktop skills, digital drawing, internet basics and responsible use of technology.
💻 Class 2 Computer – 30 Learning Topics
Select any topic to begin learning.
Understanding Computer Machines
A machine is a device that helps us perform work. Computers are electronic machines designed to work with information according to instructions.
A computer uses electronic components to perform its work.
Computers can perform many operations very quickly.
Computers can save information for later use.
A computer works according to instructions called programs.
Natural and Human-Made Machines
In everyday learning, it is useful to distinguish between things found in nature and machines created by people.
Natural Things
Trees, mountains, rivers, animals and the human body occur in nature. They are not machines made by humans.
Human-Made Machines
Bicycles, fans, washing machines, cars and computers are examples of machines designed and built by people.
How Computers Work
A computer receives information and instructions, processes them and produces a result. It can also store information.
Give data or instructions.
The computer works on the data.
The computer gives a result.
Input, Process and Output
The Input–Process–Output model helps us understand basic computer working.
| Stage | Meaning | Example |
|---|---|---|
| ⌨️ Input | Information entered into a computer | Typing 5 + 3 |
| ⚙️ Process | The computer works on the information | Calculating the answer |
| 🖥️ Output | The result produced | Displaying 8 |
Different Types of Computers
Computers come in many sizes and forms.
Usually stays on a desk and uses separate components.
A portable personal computer with a built-in screen and keyboard.
A portable computer mainly operated through a touchscreen.
A mobile phone with powerful computing features.
A wearable computing device worn on the wrist.
Powerful computer systems can serve organizations and scientific work.
Desktop and Laptop Computers
Desktop Computer
- Usually kept in one place.
- Often has separate monitor, keyboard and mouse.
- May have a separate system unit.
- Easy to use with a large screen and full-size accessories.
Laptop Computer
- Designed to be portable.
- Screen and keyboard are built in.
- Usually has a touchpad.
- Can work from a battery for a limited time.
Tablets and Smartphones
Tablets and smartphones are portable computing devices. Most are controlled mainly by touching the screen.
Tap, swipe and use other touch gestures.
Take photographs and videos.
Connect to online services when a network is available.
Run applications for learning and other tasks.
Understanding Hardware
Hardware means the physical parts of a computer system—the parts that can be physically touched.
Common Input Devices
An input device helps us send data or instructions to a computer.
| Input Device | Use |
|---|---|
| ⌨️ Keyboard | Types letters, numbers and symbols |
| 🖱️ Mouse | Points, selects, clicks and drags |
| 🎤 Microphone | Captures sound |
| 📷 Webcam | Captures pictures and video |
| 📄 Scanner | Converts physical documents or images into digital form |
| 👆 Touchscreen | Receives touch input directly on the display |
Common Output Devices
An output device presents information from a computer to the user.
Displays text, pictures and videos.
Produces printed output.
Produce sound.
Allow personal listening.
Projects an image onto a larger surface.
Storage Devices for Beginners
Computer storage keeps digital information such as documents, pictures, videos and programs.
Storage built into a computer or device.
A small portable storage device.
Portable storage that connects to a computer.
Small removable storage used by some devices.
Using a Mouse Efficiently
Good mouse control makes it easier to work with objects on the screen.
Move the pointer to an object.
Select or activate an item.
Two quick clicks.
Move an object while holding a mouse button.
Move through a page.
Keyboard Function Keys
Many computer keyboards have keys labelled F1 to F12. These are called function keys.
Their jobs depend on the computer, operating system and program. For example, F1 often opens Help in many desktop programs, while F5 often refreshes content in many web browsers.
Shift and Caps Lock Keys
Shift Key
Holding Shift while pressing a letter usually types one capital letter.
Example: Shift + a → A
Caps Lock
Caps Lock can make alphabet keys type capital letters continuously until it is turned off.
Example: COMPUTER
Typing Sentences on a Computer
A sentence begins with a capital letter and normally ends with suitable punctuation such as a full stop, question mark or exclamation mark.
⌨️ Typing Practice
My name is Riya.
I like computers.
This is my school.
Where is my book?
What a beautiful picture!
Introduction to the Desktop Screen
On many desktop operating systems, the main workspace that appears after signing in is called the desktop.
- Desktop: Main workspace.
- Icons: Small pictures representing programs, files or folders.
- Taskbar: A bar used for accessing and managing programs in systems such as Windows.
Understanding Icons
An icon is a small picture or symbol that represents something on a computer screen.
Opening and Closing Programs
A program or app can be opened in different ways depending on the device.
Find the program or app icon.
Click, double-click or tap it as required.
Wait for the program to open.
Complete your work.
Save your work if needed.
Use the program’s normal close command when finished.
Working with Windows
A program may appear inside a rectangular area called a window. Many desktop operating systems allow windows to be moved and resized.
| Control | Common Purpose |
|---|---|
| — Minimize | Hides the window without necessarily closing the program |
| □ Maximize | Expands the window to fill much or all of the screen |
| Restore | Returns a maximized window to a smaller size |
| × Close | Closes the window |
Introduction to Files
A file is a collection of digital information stored with a name. Files can contain different kinds of information.
Written information
Digital image
Sound or music
Moving pictures and sound
Slides and visual information
Introduction to Folders
A folder is used to organize files and other folders on a computer. It works like a digital container.
Creating a New Folder
The exact method depends on the operating system. On many Windows computers:
Go to the location where you want the folder.
Right-click an empty area.
Select New.
Select Folder.
Type a useful folder name.
Press Enter.
Saving Your Work
Saving stores your work so that you can use it again later.
Choose the Save command.
Select a suitable folder or location if asked.
Give the file a meaningful name.
Confirm the Save command.
Opening Saved Work
After saving a file, we can open it again to view or continue our work.
Creating Pictures with Paint
Drawing programs such as Microsoft Paint provide tools for creating simple digital artwork.
Using Shapes in Paint
Shape tools allow us to create neat geometric shapes quickly.
Adding Text to Drawings
Many drawing programs have a Text tool that allows words to be added to a picture.
🏠 🌳
MY BEAUTIFUL HOME
Select the Text tool.
Click or drag where the text should appear.
Type your words.
Choose suitable text options if available.
Save the finished picture.
Introduction to the Internet
The internet is a worldwide network that connects computers and other devices. It allows people and computer systems to exchange information.
Visit useful online pages.
Access educational resources.
Communicate using approved online services.
Access videos, pictures and other content.
Using Technology Responsibly
Responsible technology use means using digital devices in a safe, respectful and balanced way.
Take regular breaks and make time for physical activity.
Use kind and respectful language online.
Keep passwords and personal information private.
Follow rules set by parents, guardians and teachers.
Tell a trusted adult about upsetting or suspicious online content.
Use technology for learning, creativity and useful activities.
Protecting Computer Equipment
Computer equipment contains delicate electronic parts and should be handled carefully.
Keep liquids away from electronic equipment.
Use computers with clean and dry hands.
Do not hit keys, screens or other equipment.
Do not play with plugs, sockets or cables.
Do not block ventilation openings or leave devices in unsafe heat.
Carry portable devices securely and only with permission.
🧠 Class 2 Computer – Quick Revision
A computer is an electronic machine.
People design and build human-made machines.
Computers receive, process and produce information.
Input → Process → Output.
Desktop, laptop, tablet and more.
Desktop stays mainly in one place; laptop is portable.
Tablets and smartphones commonly use touchscreens.
Physical parts of a computer.
Keyboard, mouse, microphone and scanner.
Monitor, printer and speakers.
Keeps digital information for later.
Point, click, drag and scroll.
F1–F12 can perform special actions.
Help type capital letters.
Use capitals, spaces and punctuation.
Main workspace on many computers.
Small symbols representing digital items.
Apps can be opened and closed.
Program areas can often be moved or resized.
Files store digital information.
Folders organize files.
Create and give it a useful name.
Store work for later use.
Find saved work and open it again.
Create digital pictures.
Create circles, rectangles and other shapes.
Add words to drawings.
A worldwide network connecting devices.
Use technology safely and respectfully.
Keep computer equipment safe and clean.
📝 Class 2 Computer Challenge
Complete these 30 questions after studying the topics.
What is a computer?
Name two human-made machines.
How does a computer work with information?
What does IPO stand for?
Name four types of computers.
Give one difference between a desktop and a laptop.
What type of screen is commonly used on tablets?
What is computer hardware?
Name three input devices.
Name three output devices.
What is computer storage used for?
Name three mouse actions.
What are F1–F12 called?
What is Caps Lock used for?
What should a sentence normally begin with?
What is the computer desktop?
What is an icon?
Why should you save your work before closing a program?
What does the minimize button commonly do?
What is a file?
What is a folder used for?
Why should folders have useful names?
What does saving a file mean?
How can you find previously saved work?
Name three tools found in a drawing program.
Which tool can create a rectangle?
Which tool allows you to add words to a drawing?
What is the internet?
Name three responsible technology habits.
Why should liquids be kept away from computers?
Class 2 Computer Completed!
You have completed 30 Class 2 Computer topics covering machines, computer types, hardware, input and output devices, storage, keyboard and mouse skills, desktop navigation, files and folders, Paint, internet basics and responsible technology use.
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