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Filename Program that can open
extension the file
Knowledge Discovery Subject Enrichment .txt Notepad
.docx Word 2019
The filename extensions are usually hidden and cannot .xlsx Excel 2019
be seen by the user. The operating system uses these
extensions for its file-handling processes. .pptx PowerPoint 2019
.mdb Access 2019
File icon Type of file Associated Program .avi Windows Media Player

Text file Notepad File Icons
Your computer represents files with Icons. All
Document file Word 2019 the files on a computer have specific icons. By

Spreadsheet file Excel 2019 looking at a file icon, you can tell at a glance
what kind of file it is.
Presentation file PowerPoint 2019 For example, a file named Myself.txt created in

Windows Media Notepad is represented by an icon of a notepad
Audio file
Player sheet.

FOLDERS
A Folder is a container that helps to organise the files. Every file on the
computer is stored in a folder. The folders are stored on a storage device
– hard disk, CD/DVD, pen drive, etc.
Blank folder Folder with
Subfolder Subfolder
A folder within a folder is called a Subfolder. You can create any number of subfolders, and each can hold
any number of files as well as additional subfolders.

Knowledge Discovery Subject Enrichment

• The various storage devices such as hard disk, pen drive and CD/DVD are called drives and are denoted
by capital letters such as C, D, and E.
• All devices attached to a computer – hard disk, external storage
devices, digital camera, etc. are represented as folders in Windows 10.
New Volume (C:) New Volume (D:)

FILE EXPLORER
File Explorer is a program that enables you to work with files and
folders on your computer. It helps you to view, create, copy, move,
rename, and delete files and folders. 2
To start File Explorer:
1. Click the Start button on the Taskbar.
The Start menu appears.
2. In the list of programs, click File Explorer. 1
The File Explorer window appears.

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