Скачать или смотреть PAN, LAN, WAN & Network Media: Ethernet, Fiber Optics, Wi-Fi, Bluetooth, Infrared IR | اردو | हिन्दी

How do our computers and phones actually talk to each other across the world? From the tiny personal network around your smartwatch to the vast global web connecting continents, understanding these systems reveals the backbone of our digital lives.

This lecture explores the types of computer networks—PAN, LAN, and WAN—and the physical and wireless technologies that make them possible. You’ll learn how data travels through Ethernet cables, fiber optics, and even submarine cables under the sea. The discussion then moves into the invisible side of connectivity: Wi-Fi, Bluetooth, and infrared. You’ll also discover how “Wi-Fi” got its name from a marketing idea and why “Bluetooth” is named after a Viking king who united tribes—just like Bluetooth unites devices.

Key Topics Covered in This Lecture:
Personal, Local, and Wide Area Networks (PAN, LAN, WAN)
Ethernet cables, LAN cards, and fiber optic communication
Submarine cables and their role in global networking
Wireless communication: Wi-Fi, Bluetooth, and Infrared (IR)
The origins of the names Wi-Fi and Bluetooth
Differences between Wi-Fi and Bluetooth in range and power use

This lecture is delivered in Urdu, and the presentation slides are in English to help you learn the correct terms.

This lecture was delivered at the Government College of Education on Monday, October 20, 2025, specifically for B.Ed. students studying Computer Literacy.