(40 Years of the Internet )

What is the Internet?  A system of computer networks that are all connected to one another.  Each network is made up of computers all over the world that communicate with each other using the same language Click on the ?

Local Area Networks (LANs)  Ironwood Ironwood Server World Wide Web Computer Lab 4 Computer Lab 2 Computer Lab 1 Computer Lab 3

Wide Area Network (WAN) Caterpillar PeoriaHeadquarters 180 Countries Around the world

Growth of the Internet  2.9 billion people use the Internet today on a daily basis.  World Population = 7.1 Billion

How does the Internet Work?  Comparable to the Interstate highway system.  Designed for high-speed travel (of data or cars)  There are a multitude of inputs and outputs (on- ramps and off-ramps) from smaller networks or smaller roadways.

Internet vs. Highway  Greater the traffic, the slower everything moves; just like a traffic jam on a highway  The Door The Door

Internet vs. Highway  Neither are controlled or owned by a single entity, and provide a variety of routes to get from Point A to Point B.  Appear to be “free” to the users (although we pay indirectly with our tax dollars)

Difference Between Internet & Highway  The Internet is global; it encompasses the world through networks that are connected through telephone systems, satellites, and high-speed data lines; and its speed is not affected by distance.

Internet History  The United States Military (United States Department of Defense) created the internet in 1969.

Internet History  Until the 1990’s the Internet was used primarily for research, education, and military purposes.  Social Media Revolution Social Media Revolution

World Wide Web  Started in 1989  A system of interconnected information (text, images, pictures and sounds) that can be linked and accessed anywhere in the world.  The primary web page for an individual or an organization is called a homepage.  Hyperlinks are connections between two documents. Hyperlinks can be icons, colored text, or buttons. (The pointer changes to a hand.)

World Wide Web The Web is accessed through a browser Internet Explorer, Firefox, and Google Chrome are types of browsers

World Wide Web There are three parts to an Internet address: (1) www (2) organization, and (3) domain.

Common Domains .com (commercial) .edu (educational) .mil (military) .int (international) .net (network) .org (organization) .gov (government) In 2012, even more domains began popping up: .ink (tattooing) .bargains (coupons) .house (real estate) .menu (restaurants) .mobi (mobile devices)

Search Engines  Search engines are programs that allow you to search for other web pages by typing in key words.  Popular search engines are: Yahoo Google Ask Bing Many others

Test Your Skills  What small Illinois town did the Chicago Bears play in up until 1921? What was the team named? Decatur Staleys

Test Your Skills  Where was the birthplace of Abraham Lincoln? City, State, and Date Hardin County, KY, February 12, 1809.

WHAT YEAR WAS THE LEGO COMPANY FOUNDED? 1932