chapter 6 - introduction to internet

7/29/2019 Chapter 6 - Introduction to Internet

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CHAPTER 6INTRODUCTION TO INTERNET

BASIC CLASS

Projek dibawah:

TCENTER FOR TELEWORKING & TELECOMMUTING

Skill Training for Teleworkers


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Introduction to the Internet The Internet is a worldwide network of networks that

allows us, the users, to Inter-Relate, Communicate, andEducate.

Think of it as a system of roads, freeways, and bridges.All computer users connected to this "network ofnetworks" is what makes up the Internet. The Internetitself does not store information.

The Internet was originated by the US Department ofDefense in 1960's. This was to keep military,universities, and defense contractors linked together inthe event of war.

In the early days, what we call the Internet was thenknown as ARPANet (Advanced Research Projects AgencyNetwork).


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Main Keywords Associated WithInternet

Web Browser Web Browsers are programs you use to view the Internet. There are

two main Web Browsers, Microsoft Internet Explorer, and NetscapeNavigator. The program we will be using to view the Internet is

Microsoft Internet Explorer.

Website vs. Webpage A Website is a place within the Internet that contains multiple

"Webpages". For example the Bay City Public Schools is a "Website",while this Internet Tutorial Page you are viewing is a "Webpage".

URL URL is the address of a website or webpage. The URL for the main BC

Schools website is http://www.bcschools.net/. This is the address thatyou would type in the address bar at the top of Internet Explorer to goto BC School's main page.


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Main Keywords Associated WithInternet

HTML HTML is an Internet programming language that is

used to create webpages. Most pages you see on theInternet are HTML pages.

HyperlinkA Hyperlink is a string of text or a picture that takes

you to another part of a webpage or another

website/webpage. It is nothing more than a transportto somewhere else. Hyperlinks are usually a differentfont color and are underlined. You can notice ahyperlink by scrolling your mouse over the wordsand/or pictures and viewing


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Searching the Internet

There are many search engines throughout the Internet that allow you totype in a word or phrase to search millions of websites. Below are a list ofthe most popular search engines found on the Internet. Simply click on thetitle of each search engine to go to that site.

Yahoo!

You can browse Yahoo! by simply clicking on the various categorieslisted on each page. You can also search Yahoo! by entering a word(or, a few words) into the search box that appears on every page inthe directory. Combine the two strategies and you can "browse andthen search" or "search and then browse."

Altavista Altavista is a popular search engine that you can browse by simply

entering in text and/or text phrase on what you are looking for.Altavista also allows you to search by category.

Infoseek Infoseek works much the same as Yahoo! and Altavista. You can select

categories, and/or search by keyword or phrases.
http://www.yahoo.com/http://www.altavista.com/http://www.infoseek.com/http://www.infoseek.com/http://www.altavista.com/http://www.yahoo.com/


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Viewing & Saving Graphics OnThe Internet

Graphical images make your web page come alive.Images give personality and pizzazz to your site.Graphics viewed on the web come from two differenttypes of files,( .jpg and .gif) . JPG pictures are more

compressed whereas GIF files show more detail and insome cases show animation. GIF files also allow fortransparent backgrounds.

JPG Graphic GIF Animation Graphic GIF Transparent Graphic

With Transparency

Without Transparency


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Viewing & Saving Graphics OnThe Internet

Saving Graphics Off The Internet Move your mouse over the image you want to save Right click on your mouse Select Save Picture As..

Save it to the folder you desire Click Save


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ONLINE SEARCHINGSTRATEGY

Keywords synonym thesaurus

Boolean Operators/Connectors


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Search Strategy

Question

I want to find information on popularmethods of losing weight.

Identify the main concept, identify theterms/keywords describe the concept

I want to find information on popular

methods oflosingweight.


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Search Strategy

Find the synonym/additional keywords

popular - common, favorite

methods - methods, ways, techniques

losing - lose, reducing, reduce, reduction

weight - fat, dieting, diet


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BOOLEANOPERATORS

The Boolean operators AND, OR, and NOTare used to combine keywords which leadto more precise results in database

searching.


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AND It will retrieve

records/articles whichcontain both words

Good for narrowing yoursearches

popular 783,447

method 962,165

popularANDmethod 1,677

popular method


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OR It will locate all records

containing either the wordpopular" or the wordmethod" -- not necessarily

both.

Good for broadening yoursearches

popular 783,447

method 962,165

popularORmethod 1,879,342

popular method


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NOT A search for popular NOT

method will retrieve recordscontaining the wordpopular but NOT the wordmethod"

Good for narrowing yoursearches

popular 783,447

method 962,165

popularNOTmethod 87,987

popular method

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