Which among the following device is also known as Visual Display Unit (VDU)?

Correct option is D

A Monitor is also known as a Visual Display Unit (VDU). It is an output device used to display information in visual form, typically generated by the computer's processing unit. The monitor shows text, images, and videos, enabling the user to interact with the computer system.

The term VDU is often used interchangeably with monitors and screens that visually present data.

Important Key Points:

1. Visual Display Unit (VDU):
• A device that provides a visual representation of data, primarily through a monitor or display screen.
• It forms an essential interface between the user and the computer system.
2. Types of Monitors (VDUs):
• CRT (Cathode Ray Tube): Older, bulkier monitors.
• LCD (Liquid Crystal Display): Flat-panel displays commonly used today.
• LED (Light Emitting Diode): Advanced version of LCD with better brightness and energy efficiency.

Knowledge Booster:

1. Why Not Other Options?
• a) Printer:
• Incorrect. A printer is an output device that produces a hard copy of text or images.
• b) Scanner:
• Incorrect. A scanner is an input device used to digitize physical documents or images.
• c) Track Ball:
• Incorrect. A trackball is an input device used to control the cursor, similar to a mouse.
2. Purpose of a Monitor (VDU):
• Displays real-time feedback of operations performed by the computer.
• Essential for graphical user interfaces (GUIs), gaming, video editing, and general computing tasks.
3. Interesting Fact:
• Modern monitors often support high-definition (HD) and ultra-high-definition (UHD) resolutions, improving display clarity and detail.