Explanation

• The CPU (Central Processing Unit) is the brain/heart of the computer.
• It performs all calculations, executes instructions, and controls other components.

Additional information:

• First commercial CPU: Intel 4004 (1971)
• Invented by: Italian physicist Federico Faggin
• CPU Examples: Clock speeds – 3.0 GHz, 3.5 GHz, 4.0 GHz, 4.5 GHz, 5.0 GHz

Last verified on 15-02-2026

Explanation

• Date: 3 June 1947
• Announced by: Lord Louis Mountbatten
• Position: Last Viceroy of British India
• Purpose: Partition of British India
• Outcome: Creation of India and Pakistan

Last verified on 16-05-2026

Explanation

• Largest Coalfield: Thar Coalfield, Tharparkar, Sindh
• Discovery Year: 1991
• Global Ranking: Among the world's 16th-largest coal reserves
• The Thar Coalfield covers an area of about 9,100 km² in the Thar Desert.

Additional information:

• Sindh: 184.623
• Punjab: 0.235
• Balochistan: 0.217
• Khyber Pakhtunkhwa (KPK): 0.092
• Azad Jammu & Kashmir (AJK): 0.009
• Total Coal Reserves: 185.175 billion tons

Last verified on 20-07-2026

Explanation

• PowerPoint is used for Create presentations from scratch or a template.
• Add text, images, art, and videos.
• Select a professional design with PowerPoint Designer.

Last verified on 03-04-2026

Explanation

• Compiler Function: Converts high-level language into machine language.
• Output: Produces an object file (.obj / .exe) after compilation.
• Examples of Languages Using Compiler: C, C++, Java (uses compiler + JVM).

Additional information:

• Compiler: Translates whole program at once.
• Interpreter: Translates line by line.

Last verified on 21-02-2026

Explanation

• Amazon, Microsoft and Google are the three largest public cloud storage providers.
• Dropbox, eFolder, IBM etc. are examples of cloud service providers.

Last verified on 06-07-2026

Explanation

• The dollar sign ($) is used to create an absolute cell reference in MS Excel.

Additional information:

• Absolute Reference: $D$2 (Row and column fixed)
• Relative Reference: D2 (Row and column change)
• Mixed Reference: $D2 (Column fixed)
• Mixed Reference: D$2 (Row fixed)
• Shortcut Key: F4 toggles between reference types.

Last verified on 18-07-2026

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

• Connection: Links Mediterranean Sea to Red Sea
• Location: Egypt
• Opened: 1869
• Length: 193 km
• Purpose: Provides the shortest maritime route from Europe to Asia

Last verified on 08-02-2026

Explanation

• Ctrl + I = Italic

Additional information:

• Ctrl + A = Select all
• Ctrl + B = Bold
• Ctrl + P = Print
  
• Ctrl + Y = Redo
• Ctrl + S = Save

Last verified on 09-08-2026