The Internet has changed our world. Communications and commerce move instantaneously across borders and around the world. Anyone can publish their wares, their ideas and their desires. Chapter 3 will present a brief introduction into where the Internet came from, how it is structured and describe ways in which the Internet is used.
It starts with a sending unit (1), such as a person, a computer system, a terminal, or another device, that originates the message.
The sending unit transmits a signal (2) to a telecommunications device (3).
The telecommunications device performs a number of functions, which can include converting the signal into a different form or from one type to another. The telecommunications device then sends the signal through a medium(4).
Types of Networks Type Area Local Area Network (LAN) Up to 500 meters (half a mile); an office or floor of a building Campus Area Network (CAN) Up to 1,000 meters (a mile); a college campus or corporate facility Metropolitan Area Network (MAN) A city or metropolitan area Wide Area Network (WAN) Transcontinental or global area
Compares information gathered about a specific user’s behavior at a Web site to data about other customers with similar interests to predict what the user would like to see next. The software then makes recommendations to users based on their assumed interests .
Now that I know hardware, software and network, I want to build something!
Personal Video Recorder – record TV shows and watch it at anytime, skip commercials
Build your own PVR
A used computer, a wireless network card, TV tuner/capture card, home wireless network, ubuntu operating system, MythTV video recording software ( http://www.byopvr.com/Sections+index-req-viewarticle-artid-10-page-1.html )
How does it look? http://www.youtube.com/watch?v=-jH_E3NmX8U