Grade IX • Lecture Notes

Basic Computer Skills

Computer Operation • Keyboard • Mouse • Desktop • Files • Folders • Applications • Shortcuts • Printing • Troubleshooting • Safe Use

1. Learning Objectives

By the end of this lesson, students should be able to:

  • Identify the basic elements of a computer's graphical user interface.
  • Start, use, restart and shut down a computer correctly.
  • Use the keyboard and mouse effectively.
  • Open, close and switch between applications.
  • Create, save, rename, copy, move and delete files and folders.
  • Use common keyboard shortcuts to improve productivity.
  • Perform basic text-editing operations.
  • Print documents using appropriate printer settings.
  • Apply basic troubleshooting techniques.
  • Follow safe, responsible and secure computer-use practices.

2. What are Basic Computer Skills?

Basic computer skills are the fundamental abilities required to operate a computer, manage digital information, use common applications and perform everyday computing tasks safely and efficiently.

These skills form the foundation for more advanced activities such as programming, data analysis, digital design, networking and cybersecurity.

Examples:

Starting a computer, using a mouse, typing a document, saving a file, organising folders, searching for information, printing a document and connecting to a network.

3. Basic Computer Workflow

Start
→
Login
→
Open Application
→
Work
→
Save
→
Close
→
Shut Down

A disciplined workflow helps prevent accidental data loss and keeps computer use organised.

4. Starting a Computer

Starting a computer involves powering the system and allowing its firmware and operating system to initialise.

General Steps

  1. Ensure the computer and required peripherals are connected properly.
  2. Switch on the power supply if applicable.
  3. Press the computer's power button.
  4. Wait while the system performs its startup process.
  5. Allow the operating system to load.
  6. Sign in using the appropriate account credentials.
Do not repeatedly press the power button while the computer is starting. If the system appears unresponsive, follow the appropriate troubleshooting procedure.

5. Understanding the Desktop

The desktop is the main graphical workspace presented by a desktop operating system after login.

Common Desktop Elements

Element Purpose
Desktop Background Visual background of the desktop.
Icons Graphical representations of applications, files, folders or system resources.
Taskbar / Panel Provides access to applications, system information and active windows.
Start / Application Menu Provides access to installed applications and system functions.
Notification Area Displays selected system status information and notifications.

6. Working with Windows

A window is an on-screen area used by an application or system component.

Common Window Operations

Operation Purpose
Open Start or access an application, file or folder.
Minimise Hide the window from the main workspace while keeping it open.
Maximise Expand the window to occupy the available workspace.
Restore Return a maximised window to its previous size.
Resize Change the dimensions of the window.
Move Change the window's position.
Close Exit the application or close the current window.

7. Mouse Skills 🖱️

A mouse is a pointing device used to interact with graphical elements on the screen.

Action Meaning
Point Move the pointer over an object.
Single Click Select an object or activate a control.
Double Click Usually opens an item such as a file or folder.
Right Click Usually opens a context menu.
Drag and Drop Move or manipulate an object by holding the mouse button while moving the pointer.
Scroll Move through content vertically or horizontally where supported.

8. Keyboard Skills ⌨️

The keyboard is the primary text-entry device on most desktop computers.

Important Key Groups

9. Useful Keyboard Shortcuts

Shortcut Common Function
Ctrl + C Copy
Ctrl + X Cut
Ctrl + V Paste
Ctrl + Z Undo
Ctrl + Y Redo in many applications
Ctrl + S Save
Ctrl + A Select all
Ctrl + F Find / Search
Ctrl + P Print
Alt + Tab Switch between open applications on many desktop systems
Keyboard shortcuts can vary between operating systems and applications. Always consider the software currently being used.

10. Basic Text-Editing Skills

Most word processors and text editors provide common editing operations.

Operation Purpose
Insert Add new text at the cursor position.
Select Highlight text for further operations.
Delete Remove selected text or characters.
Copy Create another copy of selected content.
Cut Remove selected content and place it on the clipboard.
Paste Insert clipboard content at the cursor position.
Undo Reverse a recent operation.
Redo Reapply an operation that was undone.

11. Files

A file is a named collection of digital information stored on a computer or storage system.

Examples include documents, spreadsheets, images, audio files, videos, programs and databases.

File Properties

Example:

Science_Project.odt could be a document file created using a word processor.

12. Common File Extensions

Extension Typical File Type
.txt Plain text
.odt OpenDocument Text
.ods OpenDocument Spreadsheet
.odp OpenDocument Presentation
.pdf Portable Document Format
.jpg JPEG image
.png PNG image
.mp3 Audio file
.mp4 Common multimedia container format
A file extension gives useful information about a file's format, but the exact behaviour of a file depends on its format and the software used to open it.

13. Folders

A folder is a container used to organise files and, in most operating systems, other folders.

Why Use Folders?

Example Folder Structure:

School → Grade IX → Computer → Assignments

14. Basic File and Folder Management

Operation Purpose
Create Create a new file or folder.
Open Access the contents of a file or folder.
Rename Change the name while retaining the underlying item.
Copy Create another copy while keeping the original.
Move Change the item's location.
Delete Remove an item from its current location.
Restore Recover an item from a system recycle/trash facility when available.

15. Saving a File

Saving stores the current state of a document or other file in persistent storage.

General Steps

  1. Open or create the document.
  2. Choose Save or Save As.
  3. Select the appropriate folder.
  4. Enter a meaningful file name.
  5. Select the desired file format if necessary.
  6. Confirm the save operation.
Develop the habit of saving important work regularly. For important files, maintain appropriate backups as well.

16. Save vs Save As

Save Save As
Usually updates the current file. Creates or saves a version under a specified name, location or format.
Useful for regularly saving changes. Useful when creating a copy or changing the file name, location or format.

17. Copying and Moving Files

Copy

Copying creates a duplicate while leaving the original file in its original location.

Move

Moving changes the location of the original file.

Example:

Copying a project to a USB drive leaves the original project on the computer. Moving it to another folder changes its location.

18. Deleting and Restoring Files

Deleted files may sometimes be moved to a Recycle Bin or Trash rather than immediately removed permanently.

  1. Select the file or folder.
  2. Choose Delete.
  3. Check the Recycle Bin/Trash if the item needs to be restored.
  4. Restore the item if the operating system provides that option.
Files deleted permanently, bypassing the Recycle Bin/Trash, or removed from storage may require backups or specialised recovery procedures. Recovery is not guaranteed.

19. Working with Applications

An application is software designed to perform tasks for the user.

Application Type Purpose
Word Processor Create and edit documents.
Spreadsheet Perform calculations and analyse tabular data.
Presentation Software Create slide-based presentations.
Web Browser Access websites and web applications.
Media Player Play audio and video.
Image Editor Create or modify digital images.

20. Switching Between Applications

More than one application can often be open at the same time.

Useful Methods

Example:

A student can switch between a web browser and LibreOffice Writer while preparing a research report.

21. Searching for Files and Applications

Modern operating systems provide search tools to locate applications, files, folders and sometimes settings.

Good Search Practices

Example:

Searching for science may locate files or applications whose names or indexed contents contain that term, depending on the operating system.

22. Basic Printing Skills 🖨️

Printing creates a physical copy of digital content.

General Steps

  1. Open the document.
  2. Choose File → Print or press Ctrl + P.
  3. Select the correct printer.
  4. Choose the required pages.
  5. Set the number of copies.
  6. Check orientation and paper settings where necessary.
  7. Review the print preview if available.
  8. Start printing.

23. Common Print Settings

Setting Purpose
Printer Selects the target printer.
Pages Specifies which pages to print.
Copies Sets how many copies to produce.
Orientation Chooses portrait or landscape where supported.
Paper Size Specifies the paper format.
Duplex Prints on both sides when supported.

24. Basic Troubleshooting

Troubleshooting is the systematic process of identifying and resolving a problem.

Basic Troubleshooting Sequence

Identify Problem
→
Check Basics
→
Test
→
Apply Fix
→
Verify

25. Common Computer Problems and Basic Solutions

Problem Possible First Checks
Computer does not turn on Check power connections, power switch and indicator lights.
No Internet connection Check network connection, Wi-Fi status, router status and whether other devices can connect.
Keyboard not responding Check cable or wireless connection, battery if applicable, and whether another USB port works.
Mouse not responding Check connection, battery and sensor surface.
Printer not printing Check power, paper, ink/toner, connection and selected printer.
Application not responding Wait briefly, check system load and use the operating system's normal application-management tools if required.
File cannot be found Search by name and check recent files and expected folders.

26. Restarting a Computer

Restarting shuts down the current operating system session and starts it again.

When Restarting Can Help

Save important work before restarting. Use the operating system's normal Restart command whenever possible.

27. Correctly Shutting Down a Computer

  1. Save all important work.
  2. Close applications where appropriate.
  3. Check that important files have been saved.
  4. Use the operating system's Shut Down command.
  5. Wait until the system has completed shutdown.
Avoid switching off power abruptly while the operating system is running unless an emergency or system failure requires a forced shutdown.

28. Backup and Data Protection

A backup is an additional copy of data kept so that it can be recovered if the original is lost, damaged or corrupted.

Possible Backup Locations

A USB drive containing the only copy of a file is not a complete backup strategy. A backup should provide an additional copy separate from the original.

29. Basic Account Security 🔐

Computer skills also include the ability to protect user accounts and information.

Good habit:

On a school computer, press the appropriate screen-lock shortcut before leaving the workstation unattended.

30. Safe Internet Use

Good Practice Why?
Verify information before sharing it. Helps reduce misinformation.
Use trusted websites and applications. Reduces exposure to malicious or fraudulent services.
Protect personal information. Reduces privacy and identity risks.
Use strong authentication. Helps protect accounts from unauthorised access.
Report suspicious content or activity. Helps protect yourself and others.

31. Good Digital Organisation

Good organisation makes files easier to find, use, share and back up.

Recommended Practices

Example:

Instead of naming a file finalnew2.doc, use a descriptive name such as Grade9_IT_Computer_Skills_Notes.odt.

32. File Naming Best Practices

Good Practice Example
Use meaningful names. Grade9_IT_Assignment1.odt
Use dates consistently where useful. Science_Project_2026-08-12.odt
Avoid confusing names. Prefer Chapter1_Notes.odt over newfile.odt
Use a consistent naming scheme. Grade9_IT_W01, Grade9_IT_W02

33. Basic Cloud and Online File Skills

Cloud-based services allow users to store, access, synchronise or share files through network-connected systems.

Common Operations

Before sharing a file online, check who has access and whether the permissions are appropriate.

34. Screenshots

A screenshot is a captured image of the content displayed on a screen.

Uses

Avoid sharing screenshots that reveal passwords, authentication codes, private messages or other sensitive information.

35. Accessibility Features

Basic computer literacy includes knowing that operating systems provide accessibility features for different users.

Feature Purpose
Screen Magnification Enlarges content displayed on the screen.
Screen Reader Reads compatible digital content aloud or through other assistive output.
On-screen Keyboard Provides a virtual keyboard interface.
High Contrast Improves visual distinction between interface elements.
Speech Recognition Allows supported commands or text entry through voice.

36. Practical Activity: Create and Organise a Folder

Task

Create a folder structure for your Grade IX Computer class.

  1. Create a folder named Grade9_Computer.
  2. Inside it, create folders named: Notes, Assignments, Projects and Practical.
  3. Create a text document inside Notes.
  4. Enter five points about computer skills.
  5. Save the document with a meaningful file name.
  6. Copy the file to the Assignments folder.
  7. Rename the copied file.

37. Practical Activity: Keyboard Skills

Open a word processor and perform the following operations:

  1. Type a paragraph of at least 100 words.
  2. Select a sentence using the mouse.
  3. Copy and paste it below the original.
  4. Undo the operation.
  5. Redo the operation.
  6. Use Ctrl + S to save the document.
  7. Use Ctrl + F to search for a word.
  8. Save the document using a meaningful file name.

38. Practical Activity: Printing a Document

  1. Open an existing document.
  2. Check the document using Print Preview if available.
  3. Open the Print dialog.
  4. Select the correct printer.
  5. Set the required number of copies.
  6. Select the appropriate pages.
  7. Check paper size and orientation.
  8. Print the document under teacher supervision.

39. Case Study: A Lost Assignment

Situation

Aarav created an assignment and saved it somewhere on the computer. The next day, he could not find the file. He also has several folders containing files with unclear names.

Questions

  1. What should Aarav do first?
  2. How can the operating system's search facility help?
  3. Why are meaningful file names useful?
  4. How could a backup have helped?

Suggested Answers

  1. He should check the folders where he normally saves his work and use the system's search facility.
  2. He can search by the file name, keywords or file type, depending on the operating system.
  3. Meaningful names make files easier to identify and locate.
  4. A backup would provide another copy that could be restored if the original were lost.

40. Competency-Based Questions

Question 1

Reena accidentally deletes an important file. What should she check first?

Answer: She should check the Recycle Bin or Trash. If the file is not there, she should check available backups rather than repeatedly modifying the storage device.

Question 2

A student saves every assignment on the desktop using names such as new.doc, new1.doc and final.doc. What problem could this create?

Answer: It can make files difficult to identify and organise. A structured folder system and descriptive file names would make the files easier to locate and manage.

Question 3

A school computer is left unlocked when a student leaves the workstation. What basic computer-security practice should the student follow?

Answer: The student should lock the computer before leaving it unattended. This helps prevent unauthorised access to the account and information.

Question 4

A printer is powered on but does not print the student's document. List the first checks the student should perform.

Answer: Check whether the correct printer is selected, whether the printer is connected and online, whether paper and ink/toner are available, and whether the print queue contains an error.

41. Classroom Activity: Troubleshooting Challenge 🛠️

Problem What would you check first?
Mouse does not work. ____________________________________________
Internet is unavailable. ____________________________________________
Printer does not print. ____________________________________________
File cannot be found. ____________________________________________
Application is not responding. ____________________________________________

42. Think About It 🤔

  1. Why should a computer be shut down using the operating system's normal command?
  2. What is the difference between a file and a folder?
  3. Why are meaningful file names important?
  4. What is the difference between copying and moving a file?
  5. What is the purpose of a keyboard shortcut?
  6. Why is saving work regularly important?
  7. What is a backup?
  8. Why should you lock a computer when leaving it unattended?
  9. What should you check before printing a document?
  10. Why is troubleshooting best performed systematically?

43. Key Terms

Term Meaning
Desktop The main graphical workspace presented by a desktop operating system.
File A named collection of digital information.
Folder A container used to organise files and folders.
Application Software designed to perform tasks for the user.
Shortcut A keyboard combination or other quick method for performing an operation.
Clipboard Temporary storage used by the operating system or application for cut or copied content.
Backup An additional copy of data maintained for recovery.
Troubleshooting A systematic process of identifying and resolving a problem.
Print Preview A view that shows how a document is expected to appear when printed.
Recycle Bin / Trash A system location that may temporarily hold deleted files before permanent deletion.

44. Lesson Recap

  • Basic computer skills are the foundation for effective digital work.
  • A computer should be started, restarted and shut down using appropriate operating-system procedures.
  • The mouse supports pointing, selecting, clicking, dragging and scrolling.
  • The keyboard provides efficient text entry and supports many useful shortcuts.
  • Files should be organised in meaningful folders and named descriptively.
  • Copying creates a duplicate, while moving changes the item's location.
  • Important work should be saved regularly and backed up.
  • Print settings should be checked before printing.
  • Troubleshooting should begin with simple checks and proceed systematically.
  • Computer users should protect passwords, personal information and important files.
  • Digital organisation, accessibility and cybersecurity are essential parts of modern computer literacy.

45. Homework 📝

  1. Define basic computer skills.
  2. Explain any five common mouse operations.
  3. List ten useful keyboard shortcuts and their functions.
  4. What is a file? What is a folder?
  5. Explain the difference between copying and moving a file.
  6. Explain the steps for saving a new document.
  7. What is a backup? Why is it important?
  8. Explain five basic computer troubleshooting practices.
  9. Write five rules for safe computer use in a school laboratory.
  10. Prepare a suitable folder structure for organising your Grade IX Computer subject files.

46. Quick Assessment

  1. What is a desktop?
  2. What is a file?
  3. What is a folder?
  4. What is the difference between Save and Save As?
  5. What does Ctrl + C do?
  6. What does Ctrl + V do?
  7. What does Ctrl + S do?
  8. What is a backup?
  9. What is troubleshooting?
  10. Where might a deleted file be temporarily stored?
  11. Why should files be given meaningful names?
  12. What should you do before shutting down a computer?
  13. What should you check if a printer does not print?
  14. Why should an unattended computer be locked?
  15. Why are basic computer skills important for students?