🗂️ Computer Basics

Operating System & File Management

⏱ 3 hr3 topicsInteractive
🎯 By the end: You can describe the desktop, do basic file operations, navigate File Explorer and drives, read file properties & extensions, search with wildcards, and explain backups.

The operating system (OS) — like Windows — runs your computer and keeps your work organised as files and folders. This chapter shows you how to find your way around and manage your files.

1The desktop & GUI

The OS gives you a way to interact — a user interface:

GUICUI
You useIcons, menus, windows (point & click)Typed commands
ExampleWindows, macOSMS-DOS, Linux terminal

Parts of the desktop

PartWhat it is
IconsSmall pictures for files, folders & programs
TaskbarThe bar (usually at the bottom) showing open programs
Start menuWhere you find and open programs
ShortcutA link (small arrow) that opens a file/program quickly
Key points
  • A GUI uses icons/menus/windows (point & click); a CUI needs typed commands.
  • Desktop parts: icons (pictures), taskbar (open programs), Start menu (open programs).
  • A shortcut is a quick link to a file or program (shown with a small arrow).

2Files, folders & operations

A file stores your work (a document, picture, song). A folder (directory) holds files and can hold other folders — building a tidy tree.

File operations

OperationDoes
CreateMake a new file/folder
RenameGive it a new name
CopyMake a duplicate (original stays)
Move (Cut)Shift it elsewhere (original goes)
DeleteRemove it (goes to Recycle Bin)
Copy keeps the original AND makes a new one; Move shifts the only copy to a new place. Deleted files go to the Recycle Bin, so you can usually restore them.
Key points
  • A file stores your work; a folder holds files and other folders in a tree.
  • Operations: create, rename, copy (duplicate), move/cut (relocate), delete (to Recycle Bin).
  • Copy keeps the original; move shifts the only copy.

3File Explorer, properties, search & backups

File Explorer (Windows Explorer) is the program to browse your files. Storage is split into drivesC: (usually the main drive) and D:, etc.

File details

  • File extension (after the dot) shows the type: .docx (Word), .xlsx (Excel), .jpg (image), .mp3 (audio).
  • Properties show a file's size, type and date modified.

Searching with wildcards

WildcardMatchesExample
*Any number of characters*.jpg = all JPG images
?Exactly one characterday?.txt = day1.txt, dayA.txt
Keep a regular backup — a spare copy of important files (on a pen drive or the cloud) — so you don't lose your work if a device fails.
Key points
  • File Explorer browses your files; storage is split into drives (C:, D:).
  • A file extension shows its type (.docx, .jpg, .mp3); properties show size, type and date.
  • Wildcards: * matches any characters (*.jpg), ? matches one; keep regular backups of important files.

★ Practical: organise your files

On a computer:

  1. Create a folder named 'Class6', and a sub-folder 'Projects' inside it.
  2. Make a text file, then copy it into 'Projects' and rename the copy.
  3. Open a file's Properties and note its size and date modified.
  4. Search the folder for all images using the wildcard *.jpg.

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