Explanation

• A single page of a PowerPoint presentation is called a Slide.
• A slide is a single screen/page that contains text, images, charts, videos, or other presentation elements.
• A collection of slides forms a PowerPoint presentation.
• PowerPoint is a presentation software developed by Microsoft.
• Slides can be displayed using Slide Show mode.
• The default PowerPoint file extension is .pptx.

Last verified on 07-08-2026

Explanation

• Full Form: Portable Document Format (PDF)
• Developed by: Adobe Inc.
• Introduced: 1993
• Co-founder associated with Adobe: Charles Geschke
• Purpose: Reliable document sharing and viewing

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Last verified on 01-07-2026

Explanation

• Asia is the largest continent by land area and population.
• It covers about 44.58 million sq km.
• Around 60% of the world’s population lives in Asia.
• It has 40+ countries, including China, India, and Indonesia.
• It makes up about 30% of Earth’s land area.

Additional information:

• Australia is the smallest continent in the world by area.
• Antarctica is the smallest continent in the world by population.

Last verified on 07-02-2026

Explanation

• Africa is known as the "Dark Continent"
• Because much of its land remained unexplored by Europeans for a long time.
• The world's second-largest and second-most populous continent after Asia

Additional information:

• First largest continent by area: Asia,
• Second largest continent by area: Africa,
• Third largest continent by area: North America,
• Fourth largest continent by area: South America,
• Fifth Largest Continent by area: Antarctica,
• Sixth Largest Continent by area: Europe,
• Smallest continent by area: Australia.

Last updated: 20-09-2026 by NA

Explanation

• Switzerland is known as the playground of Europe.
• This nickname highlights its diverse landscapes, from high peaks to pristine lakes

Additional information 

• The capital is Bern.
• The currency is the Swiss Franc.
• official language is German; French; Italian.
• Continent Europe.
• Religion is Christianity.
• Parliament called Bundesversammlung.

Last updated: 20-09-2026 by NA

Explanation

• The shortcut key for Undo (last action reverse) is Ctrl + Z in most computer systems.
• It is used to cancel the last mistake or action.

Additional information:

• Ctrl + P = Print
• Ctrl + Y = Redo
• Ctrl + S = Save
• Ctrl + C = Copy command
• Ctrl + V = Paste
• Ctrl + C = Copy
• Ctrl + X = Cut
• Ctrl + Y = Redo

Last verified on 10-06-2026

Explanation

• Europe is the only continent without a desert.
• It has a temperate climate with sufficient rainfall.

Additional information:

• Divided by the Ural Mountains
• Second-smallest continent
• Covers 2% of Earth’s surface
• Area: 10.18 million km²

Last verified on 16-01-2026

Explanation

• CPU stands for Central Processing Unit.
• It is the main part of a computer that processes all instructions.
• It is considered the brain of the computer system.
• It performs all calculations and decision-making tasks.
• It controls the operations of all hardware and software.
• It is located on the motherboard.

Last verified on 10-06-2026

Explanation

• MS-DOS: Microsoft Disk Operating System
• Developed by: Microsoft
• Designed for: x86-based personal computers
• Interface: Command-line interface (CLI)
• IBM version: IBM PC DOS
• DOS: A term also used for MS-DOS-compatible operating systems.

Explanation

• Definition: Uses 2 or more CPUs.
• Benefit: Faster processing.
• Main Memory: Processors usually share RAM.
• Purpose: Handles multiple tasks efficiently.

Additional information:

• Uniprocessor: One processor
• Multithreaded: Multiple threads
• Multiprogramming: Multiple programs in memory