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Published byKristin Harrison Modified over 8 years ago
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What is the Internet? 11/27/07
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Where did the Internet start? Networked computers started by Military ARPANET – 1969 experiment by the Defense department Connected 4 supercomputers During war email part became popular Soon became a problem Protocols were developed Evolved into today’s Internet
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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
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1993 – Graphical User Interface was introduced Mosaic released as 1 st graphical web browser Web is only part of the internet
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Who owns the Internet? NO ONE!!!!!
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Internet2 Consortium of 200 universities working with industries and government Advanced Internet applications and technologies Will not replace existing Internet
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What will the next generation bring? Only time will tell!!!!
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How Do We Join this Growing Community?
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Users People who use the services Look up telephone numbers Browse online catalogs Make purchases Download music/games Send email 2/3 of population Home, work, schools, libraries, other public locations
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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, email, other resources
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Content Providers Supply info to Internet Commercial businesses Nonprofit organizations Educational institutions Individuals
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Application Service Providers Companies that manage/distribute software-based services Rent software access Examples: office suites, accounting programs Web Services
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Infrastructure Companies Enterprises that own/operate paths of the Internet Telephone, satellite, and cable companies
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Hardware/software companies Companies that make/distribute products used with internet
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How do I find info?
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Internet Addresses IP address – Internet Protocol address Uniquely identifies each computer or device Example 216.239.39.99 Identifies specific computer
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Domain Name IP hard to remember Domain name – text version www.google.com Examples of domain names: Com - commercial Edu - education Gov - government Mil - military Net – network provider Org – non-profit organization
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Web Addresses URL – Uniform Resource Locator http://www.us- parks.com/grand_canyon/scenic_vistas.html http://www.us- parks.com/grand_canyon/scenic_vistas.html http://www.us- parks.com/grand_canyon/scenic_vistas.html http: - Hypertext Transfer Protocol – sets rules how pages transfer on the Internet www.us-parks.com – domain name www.us-parks.com grand_canyon – path to the server grand_canyon scenic_vistas.html – web page name scenic_vistas.html
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Looking for info Subject directory – classifies web page by categories www.yahoo.com www.yahoo.com Search engine – finds web sites, web pages, images, video, news, etc. www.google.com www.google.com Some do both – Yahoo! And Google
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Search Strategies
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Using Phrases Use Phrase searching Keying more than one word Returns all phrases first, then the individual words
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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
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Multiple Sites Don’t be afraid to use other search sites Give different results Use more than one
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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
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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
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