Explanation

• Minicomputers: Used for medium-sized computing tasks.
• - Support multiple users simultaneously.
• - Smaller and less powerful than mainframe computers.

Additional information:

• Supercomputers: Extremely complex calculations.
• Microcomputers: Single-user computers.
• Mainframes: Large-scale data processing, many users

Last updated 07 Nov 2026 by NA

Explanation

• A terminal is required when more than one person uses a central computer at the same time.
• The word "terminal" comes from early computer systems 
• it is used to send commands to other computers and enter data 
• it is an electronic or electromechanical hardware device

Last updated 07 Nov 2026 by NA

Explanation

Standard 8K UHD Resolution: 7680 × 4320 pixels

- Horizontal pixels: 7,680

- Vertical pixels: 4,320

- Total: Approximately 33.2 million pixels.

- 8K has four times as many pixels as 4K UHD.

Last updated 07 Nov 2026 by NA

Explanation

• Definition: Display resolution with approximately 4,000 horizontal pixels.
• 4K resolution is a display resolution of 4096×2160 pixels.
• It is four times the resolution of Full HD (1920×1080 pixels).
• Pixel Count: Approximately 8.3 million pixels.

Last updated 06 Nov 2026 by NA

Explanation

• A DVD is a type of optical media 
• DVD stands for Digital Versatile Disc.
• It uses laser technology to read and write data.
• Category: Secondary Storage
• Developed: 1995.
• First Released: 1 November 1996, in Japan.
• Developed by: Sony, Panasonic, Philips, and Toshiba.

Last updated 06 Nov 2026 by NA 

Explanation

- Data manipulation involves modifying, organizing, and transforming data.

- It is commonly referred to as Data Processing.

Last updated 06 Nov 2026 by NA

Explanation

• Inventor: Tim Berners-Lee
• Collaborator: Robert Cailliau
• Year of invention: 1989 August
• Organization: CERN (European physics lab, Switzerland)
• First website: 1991 (public release)
• WWWW stands for World-Wide Web Worm.

Last updated 06 Nov 2026 by NA

Explanation

• The first-ever IBM PC-compatible computer virus, named "Brain'
• It is also known as Pakistani Brain or Lahore
• Developed in January 1986
• By two brothers, Basit Farooq Alvi and Amjad Farooq Alvi,

Last updated by NA on 06-11-2026

Explanation

• A dedicated computer is assigned one and only one specific task.
• It is designed to perform a particular function.
• Dedicated computers are commonly used in ATMs, traffic-control systems, and industrial machines.
• They are optimized for their specific purpose and may be part of an embedded system.

Last updated by NA on 05-11-2026

Explanation

• DMA stands for Direct Memory Access.
• It is a method that allows an I/O device to transfer data directly to or from main memory (RAM).
• The CPU does not need to handle every individual byte of the transfer.
• DMA can improve data-transfer speed and reduce CPU workload.
• It is commonly used for devices such as disk drives, network cards, and sound cards.

Last updated by NA on 05-11-2026