What is the Internet? 11/27/07

Where did the Internet start?  Networked computers started by Military  ARPANET – 1969 experiment by the Defense department  Connected 4 supercomputers  During war part became popular  Soon became a problem  Protocols were developed  Evolved into today’s Internet

World Wide Web  Internet went unnoticed for several decades  1989 – Tim Berners-Lee proposed an idea at CERN (a physics lab in Europe)  Envisioned a network to organize info in pages that were connected by selectable text – hyperlinks  Became popular with researchers

 1993 – Graphical User Interface was introduced  Mosaic released as 1 st graphical web browser  Web is only part of the internet

Who owns the Internet? NO ONE!!!!!

Internet2  Consortium of 200 universities working with industries and government  Advanced Internet applications and technologies  Will not replace existing Internet

What will the next generation bring? Only time will tell!!!!

How Do We Join this Growing Community?

Users  People who use the services  Look up telephone numbers  Browse online catalogs  Make purchases  Download music/games  Send  2/3 of population  Home, work, schools, libraries, other public locations

Internet Service Providers  Who we get our service from  For a fee  Examples: ATT, AOL, Sprint, EarthLink, Comcast Cable  Provide access to World Wide Web, , other resources

Content Providers  Supply info to Internet  Commercial businesses  Nonprofit organizations  Educational institutions  Individuals

Application Service Providers  Companies that manage/distribute software-based services  Rent software access  Examples: office suites, accounting programs  Web Services

Infrastructure Companies  Enterprises that own/operate paths of the Internet  Telephone, satellite, and cable companies

Hardware/software companies  Companies that make/distribute products used with internet

How do I find info?

Internet Addresses  IP address – Internet Protocol address  Uniquely identifies each computer or device  Example  Identifies specific computer

Domain Name  IP hard to remember  Domain name – text version   Examples of domain names:  Com - commercial  Edu - education  Gov - government  Mil - military  Net – network provider  Org – non-profit organization

Web Addresses  URL – Uniform Resource Locator  parks.com/grand_canyon/scenic_vistas.html parks.com/grand_canyon/scenic_vistas.html parks.com/grand_canyon/scenic_vistas.html  http: - Hypertext Transfer Protocol – sets rules how pages transfer on the Internet  – domain name  grand_canyon – path to the server grand_canyon  scenic_vistas.html – web page name scenic_vistas.html

Looking for info  Subject directory – classifies web page by categories  Search engine – finds web sites, web pages, images, video, news, etc.  Some do both – Yahoo! And Google

Search Strategies

Using Phrases  Use Phrase searching  Keying more than one word  Returns all phrases first, then the individual words

Boolean Operators  And, Or, and Not  Example: all searches related to Intel and AMD processor manufactures  Key in “INTEL AND AMD”  Example 2: all searches not including Intel  Key in microprocessors NOT Intel  Some search sites use + for AND, - for NOT

Multiple Sites  Don’t be afraid to use other search sites  Give different results  Use more than one

Appropriate Keywords  Do not use “the”, “a”, and “in” unless they are part of a phrase  Example: want to find out about bed and breakfasts located in Monticello, Georgia  Key in – Monticello Georgia bed and breakfast  If this doesn’t help – use synonyms  Ex. Hotel or lodging

Wildcards  A special symbol in conjunction with a part of a word  Ex. Hand sign*  This would find hand signs, hand signals, hand signaling, and any other combination