1. CS 100, Lecture 2 The Internet CS 100 Mount Union College Spring, 2003

2. CS 100, Lecture 2 The Internet u In 1960’s a Wide-Area Network connecting research and military facilities was developed l called the ARPANET u As it grew, name was changed to Internet u No centralized control center

3. CS 100, Lecture 2 How the Internet is used u Electronic Mail u Send and receive messages to any other Internet user u No charge, no matter the distance! u Must know the other person’s UserID on their system, and the DOMAIN name of their system

4. CS 100, Lecture 2 Internet E-Mail Addresses

5. CS 100, Lecture 2 Internet E-Mail Addresses u Outer-Level Domains: u United States: Ü com - commercial site Ü edu - educational site Ü org - non-profit organization Ü gov - governmental site Ü mil - military site

6. CS 100, Lecture 2 Internet E-Mail Addresses u Outer-Level Domains: u International: Ü uk - United Kingdom Ü ca - Canada Ü de - Germany Ü full list: http://www.checkdomain.com/list.html http://www.checkdomain.com/list.html

7. CS 100, Lecture 2 How the Internet is used u World-Wide Web (WWW) u Graphical, Multi-media, easy to use u explosive growth l this is what most people think of when the word “Internet” is used u computer acts as information retrieval / communications device

8. CS 100, Lecture 2 How to navigate around the Web: u follow hyper-links from one document to the next l will be underlined, and in a different color than ordinary text u enter a brand new document address l “File/Open” from the Windows Explorer menu l [Ctrl]-O keystroke combination

9. CS 100, Lecture 2 How to navigate around the Web: u use a Search Engine l AllTheWeb l Yahoo l Google l Dogpile l many more…. u Let’s Do It!!!

10. CS 100, Lecture 2 The Internet CS 100 Mount Union College Spring, 2003