Explanation

• A printer is an output device that transfers digital information from a computer onto a physical medium, most commonly paper. 

Additional information:

Scanner:

Used to digitize physical documents or images, converting them into digital data.

Monitor:

An output device that displays visual information from a computer, but it does not produce physical copies on paper.

Keyboard:

An input device used to enter text and commands into a computer. 

Last updated by NA on 05-11-2026

Explanation

• Data Processing: Performs calculations and operations.
• Data Storage: Stores data and information.
• Data Movement: Transfers data between devices.
• Control: Manages computer operations.

Last updated by NA on 05-11-2026

Explanation

• A Dot Matrix Printer uses an ink ribbon.
• It is an impact printer that prints by striking pins against the ribbon and paper.

Additional information:

• Laser Printer: Uses toner powder and a laser beam.
• Inkjet Printer: Sprays tiny droplets of liquid ink.
• Thermal Printer: Uses heat-sensitive paper.

Last updated by NA on 04-11-2026

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

• Processor: Executes instructions.
• Scanner: Converts documents into digital images.
• Router: Connects networks.

Last updated on 26 Oct 2026

Explanation

• Writing: Storing or saving data in a memory location.
• Reading: Retrieving data from a memory location.
• Processing: Performing operations on data.
• Retrieving: Accessing stored data.

Explanation

• The ALU (Arithmetic Logic Unit) is the core component of the CPU.
• It performs both arithmetic operations (calculations) and logical operations (comparisons).
• Without ALU, a computer cannot process data.
• ALU works together with the Control Unit (CU).

Last verified on 06-05-2026

Explanation

• Data entered through the keyboard is temporarily stored in RAM.
• RAM holds data and programs currently being used.
• It is a volatile memory.
• Data in RAM is lost when the computer is turned off.

Explanation

• A pixel (picture element) is the smallest addressable element of a digital image or display screen.
• A screen is made up of millions of pixels arranged in rows and columns.

Additional information:

• Byte: A unit of digital data, normally 8 bits.
• Bit: The smallest unit of digital data, represented as 0 or 1.

Last verified on 05-10-2026

Explanation

• A computer mouse is a handheld hardware input device.
• It is used to control the cursor in a GUI (Graphical User Interface).
• It helps in pointing, moving, and selecting items on a computer.

Last verified on 04-10-2026