It is a network of computers—or groups of interconnected computers—that consists of millions of private and public, academic, business, and government networks of local to global scope. 

They are linked by copper wires, fiber-optic cables, wireless connections, and other technologies.

Military origins—need for decentralized communication during Cold War

1962—Department of Defense created the Advanced Research Project Agency (ARPA).

ARPANET expanded to universities receiving defense-related funding.

Administration turned over to National Science Foundation

Opened to businesses in the 1980s Internet is still decentralized Standards are managed by the Internet

Corporation for Assigned names and Numbers (ICANN)

At Linebaugh: History of the Internet: A Chronology, 1843 to the Present (004.678 H)

Dial up Cable Modem Digital Subscriber Line (DSL) T-1 Local Area Network (LAN)

Dr. Tim Berners-Lee credited with invention of web.

Creation of Hypertext Markup Language (HTML) made linking of documents between computers possible

Present websites are examples of linking process, but early linking mainly between text files.

First browser created in 1992

Made access to websites easier

Also made transfer of graphics, audio and video possible.

Examples› Internet Explorer

(Microsoft)› Mozilla Firefox› Safari› Chrome› Opera

A browser is a program capable of interpreting HTML

Results look like a page of print text, easily readable.

Uniform Resource Locator (URL) is the “address” used to find a site. Each part of a URL is an instruction for the browser to read:

http://www.linebaugh.org/linebaugh/kids/schedule.htm

Protocol domain directories document

Top 10 Uses1. Email2. Research3. Downloading files4. Discussion groups5. Interactive games6. Education7. Networking8. News and Weather9. Job Hunting10.Shopping

Others?

A search engine is a tool for finding info on the web.

Examples:› www.google.com› www.yahoo.com› www.ask.com› www.live.com

Search Tips› Google Search Tips

AND - All the terms joined by "AND" must appear in the pages or documents. Some search engines use + instead.

OR - At least one of the terms joined by "OR" must appear in the pages or documents.

NOT - The term or terms following "NOT" must not appear in the pages or documents. Some search engines substitute – for NOT.

FOLLOWED BY - One of the terms must be directly followed by the other.

NEAR - One of the terms must be within a specified number of words of the other.

Quotation Marks - The words between the quotation marks are treated as a phrase, and that exact phrase must be found within the document or file.

Not everything on the internet is harmless.

If something sounds too good to be true... FEMA Guidelines for Children Software for blocking sites

› www.cyberpatrol.com› www.netnanny.com› We-Blocker (free)› www.k9webprotection.com

Electronic mail is the sending of messages electronically—no postage!

Web-based email—facilitated within a web browser and accessible from any computer with internet connection. › E.g.: Hotmail, Yahoo!Mail, Gmail, etc.

Email client—program housed on one computer and accessible only at that computer. › E.g. Microsoft Outlook, Mozilla Thunderbird

(free) You can use a local email client to

manage your web-based email accounts, if you have more than one. (For advanced emailers)

An email address is much like your mailing address—don’t give it out to just anyone.

What is Spam? It is mass distributed, unsolicited junk email. Some is malicious, so never open these messages.

How to know if it is spam? Did you give this person your email address?

1.  Choose a provider:› Gmail by Google› Yahoo! Mail› Hotmail› Or use your Internet Service

Provider (Comcast, BellSouth, etc.)2. Follow their process for signing

up3. Start emailing!

To line—email receiving message Subject line—summary of topic CC line—carbon copy; recipient should see

information but is not the main target BCC—blind carbon copy; recipients see

only what is in the To line; used for privacy when bulk emailing

Body—contains message Attachments (optional)—additional files

you wish to send that cannot fit in the body.

Always use the Subject line—Summary of message

Visual appearance=tone: Do not type in all CAPS

Email is as good as a written letter—use capitalization and punctuation where appropriate.

Don’t forget to sign your name

If sending to many people, it is always appropriate to use the BCC function—some of your friends may not want their address distributed.

Don’t aimlessly forward messages that you think are cute or funny—consider the recipient before forwarding

Time for questions and demonstrations.