Explanation

• The physical part of a computer is called hardware.
• Hardware refers to all the tangible parts of a computer that contribute to its functionality.
• Some examples of hardware include:
• Motherboard, RAM, CPU, Mouse, Keyboard, CD, DVD, Hard disk, Monitor, and Case.

Additional information:

• In contrast, software is the intangible part of a computer that helps it perform its functions.
• Software is made up of programs, procedures, and routines that run the computer system.

Last verified on 04-09-2026

Explanation

• A Cell is the intersection of a row and a column in a spreadsheet such as MS Excel.
• Each cell has a unique cell address, such as A1, B5, or C10.
• Rows are identified by numbers: 1, 2, 3, ...
• Columns are identified by letters: A, B, C, ...
• A cell can contain text, numbers, formulas, or functions.

Last verified on 09-08-2026

Explanation

PNG (Portable Network Graphics)

- Type: Raster image format.

- Uses: Web graphics and digital images.

- Key Feature: Supports transparent backgrounds.

- Compression: Lossless.

Last updated on 26 Oct 2026

Explanation

• Router: Connects two or more networks.
• Directs data packets to their correct destination.
• Selects the best route for data transmission.
• Connects a local network (LAN) to the internet.
• Works mainly at Layer 3 (Network Layer) of the OSI model.

Explanation

• 1 nanosecond = one billionth of a second.
• 1  ns = 10^-9 seconds.
• 1 microsecond = 1,000 nanoseconds.
• Computer memory access time is often measured in nanoseconds.