1. Monitor (Display Screen)
What is a Monitor?
A monitor is
an output device that
displays information from the computer visually — including text, images,
videos, software interfaces, and more. It's also called a display screen or visual display unit (VDU).
Main Functions
Function |
Description |
Display Output |
Shows visual output from the CPU |
User Interface |
Lets you interact with applications visually |
Multimedia |
Plays video, games, presentations, and animations |
Real-Time Feedback |
Shows instant results of commands (e.g., typing, coding) |
Key Components
- Screen Panel (LCD/LED/OLED) – The main display
surface
- Power Supply – Provides electricity
to run the screen
- Video Ports (HDMI/VGA/DisplayPort) –
Connects to CPU
- Controls (Brightness, Contrast, etc.) –
Adjust display settings
Types of Monitors
Type |
Description |
CRT Monitor |
Old bulky type, uses cathode-ray tube |
LCD Monitor |
Flat-screen, lightweight, uses liquid crystals |
LED Monitor |
Improved LCD with LED backlight, energy-efficient |
OLED Monitor |
High contrast & color quality, used in premium displays |
Touchscreen Monitor |
Allows interaction via touch, no mouse needed |
4K / 8K Monitor |
Ultra HD resolution, used for professional media work |
Common Monitor Sizes
- 15" –
17" → Basic office use
- 19" –
24" → General home and business use
- 27" –
32"+ → Gaming, design, professional use
Uses in Real Life
- Typing
documents
- Watching
videos and streaming
- Playing
games
- Graphic
design and editing
- Learning and teaching online
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