Explanation

• Alt + Shift + F1 / Shift + F11 → Insert a new worksheet

Additional information:

• Shift + F10 → Open shortcut/context menu
• Ctrl + Page Up → Previous worksheet
• Ctrl + Page Down → Next worksheet

Last verified on 15-07-2026

Explanation

• Scanner: Converts physical images/text into digital form.
• Uses light: Detects and captures the image.
• Output: Digital image or document.

Last updated by NA ON 16-09-2026

Explanation

• The pyramid of Giza is located in Egypt.
• It is one of the 7 wonders of the ancient world.
• These ancient structures are situated on the Giza Plateau, near Cairo.
• The houses surrounding the pyramid were made of clay bricks dried in the sun.
• All the houses had flat roofs.

Last verified on 30-09-2026

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

Explanation

• Modem is a computer hardware device used for communication over a network.
• Modem stands for Modulator-Demodulator.
• A modem converts digital data into signals suitable for transmission.
• It also converts incoming signals back into digital data.
• Modems are commonly used to provide Internet connectivity.

Last verified on 15-09-2026

Explanation

• The CPU (Central Processing Unit) is the brain/heart of the computer.
• It processes data and executes instructions.
• It controls other parts of the system.

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 updated by NA on 09-09-2026

Explanation

• WWW stands for World Wide Web.

Additional information:

• It is an information system.
• First published: 6 August 1991
• Founder: Tim Berners-Lee in 1989.
• Birthplace: CERN near Geneva, Switzerland.

Last verified on 01-07-2026

Explanation

• Vasco da Gama was the first European to reach India by sea in 1498.
• He was a Portuguese explorer who arrived at Calicut (India) via the Cape of Good Hope route.
• His voyage opened the sea route between Europe and Asia.
• This event marked the beginning of European colonial influence in India.
• He later died in India in 1524.

Last verified on 20-06-2026

Explanation