Useful Links to understand Data Communication Concepts Better

Following links provide useful information to better understand Data Communication Concepts. The list is updated time to time as and when the concepts are covered in the class:

1. History of the Internet (8:10 min video uploaded by picolsigns)
2. How the Internet works in 5 minutes (4:49 min video uploaded by AaronTitus)
3. The History of Morse Code (5:24 min video uploaded by JEB Five)
4. Working of a Telegraph - Physics (2:30 min video uploaded by Elearnin)
5. How it's Made Copper Communications Cables (6:20 min video uploaded by Superior Essex)
6. How It's Made Fiber Optics (4:47 min video uploaded by TRR56)
7. Strowger Switch (1:06 min video uploaded by mimesia) 
8. Online Integral Calculator - A useful website to quickly apply integration for an equation. It uses LaTeX for typesetting and also shows integration steps. It also has the options to calculate definite integrals.