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HINARI/Basic Internet Concepts (module 1.1) MODULE 1.1 Basic Internet Concepts Instructions - This part of the: course is a PowerPoint demonstration intended to introduce you to Basic Internet Concepts.

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MODULE 1.1 Basic Internet Concepts

Instructions - This part of the:

  • course is a PowerPoint demonstration intended to introduce you to Basic Internet Concepts.

  • module is off-line and is intended as an information resource for reference use.


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Topics

  • Basic Internet Concepts

  • Structure of the Internet

  • Common Internet Protocols


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What is the Internet?

  • Publicly accessible network of interconnected computers which communicate via software protocol standards

  • Easily accessed (via modem and phone line, ISDN, direct cable landline, satellite)

  • Expanding global infrastructure

  • Regarding information delivery, the most significant change since the development of the printing press in the 15th century!


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Internet Growth

  • Exponential growth for the last few years

  • The Web Server market has grown from 120,000 units in 1995 to 45 million in 2003

  • In 1993, 90,000 people used the Internet; in 2002, 600 million people used the Internet; in 2007, over 1 billion people will use the Internet

  • Hardware costs are decreasing year on year

  • Over the next 10 years electronic commerce will boom, reaching $100s of billions by the year 2010


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Internet Architecture

Give me file x

Computer on the Internet holding

information - remote “server”

Here it is

Desktop computer - “client”


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Server/Client Interface

SERVERS

Hardware + Software

Software

Protocols

CLIENTS

Hardware + Software


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Internet Services

  • The World-Wide Web (Multimedia Information Services)

  • Search tools (via the World-Wide Web)

  • Communication (E-mail, Telnet)

  • Retrieval/information transfer (FTP)


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The World Wide Web

  • WWW, web, W3, World Wide Web

  • Often what people mean by the Internet

  • Based on hypertext - the ability to link text and documents dynamically and interactively

  • Uses hypertext markup language - HTML

  • The WWW is a global standard

  • Can use text, graphics, sound and video

  • Anyone can link to and make use of the web


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Means of Delivery

  • Most often cables carry information back and forth between the client and server

  • 2nd principal option for delivery is satellite

  • Cables vary in speed and amount of information they can carry

  • Sometimes cables are slow in carrying information or lose the signal, especially if:

    • information must cross long distances

    • too much traffic on the cable

    • cable capacity, or bandwidth, is low


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Web Browser

  • Browser is the software that is used to view the Web

  • Standard browser features

    • scrolling, back, forward, stop, home, refresh

  • Navigation - in built features

    • back, forward, home, go to, yes, no

  • Search on a single web page

  • Multiple Web browser windows


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Browser Customization

  • Toolbar options

  • Link to a specific homepage

  • Using the right click mouse button

  • Using favorites or bookmarks

    • Adding

    • Organizing

    • Editing


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Browser Requirements

HINARI works best with:

  • Microsoft® Internet Explorer version 4.0 or higherStandard versions included with Microsoft® Windows 98/ME/2K/XP are adequate. To download Internet Explorer go to: http://www.microsoft.com/ie/download/

  • Netscape version 6 or higher.For a Netscape browser go to: http://www.netscape.com/download/

  • Mozilla Firefox version 1.0 or higher

    For a Mozilla Firefox browser go to:

    http://www.mozilla.com/en-US/firefox/


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Adobe Acrobat PDFs

  • You will need an Adobe Acrobat Reader to view journal articles in PDF format.

  • Adobe Acrobat Reader can be downloaded for FREE from the Adobe web site:

    http://www.adobe.com/prodindex/acrobat/readstep2.html


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The Internet Address or URL

This page is being viewed in the Internet Explorer Browser. Browsers allow computers to read Hyper Text Mark-up Language OR HTML.

The Address or URL is typed in here.


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Entering a URL address in the address box

After entering a URL address in the address box click Go or hit the RETURN key. In this example we have entered http://www.who.int for the WHO website


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Hypertext links

Links to other pages are usually underlined or in another colour of text.


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Forward and back navigation buttons

The arrow buttons on the tool bar allow users to move Back and Forward to pages within the website.


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Home page button

The House icon on the tool bar will take you back to the browser’s default Home Page.


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This is the end of Module 1

This is the end of Module 1.1

There is a Work Book to accompany this part of the module. The workbook will take you through a live session covering the topics included in this demonstration with working examples.

Updated 02 2008


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