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HINARI/Basic Internet Concepts (module 1.1)

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HINARI/Basic Internet Concepts (module 1.1) MODULE 1.1 Basic Internet Concepts Topics Basic Internet Concepts Structure of the Internet Common Internet Protocols ... – PowerPoint PPT presentation

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Title: HINARI/Basic Internet Concepts (module 1.1)


1
HINARI/Basic Internet Concepts(module 1.1)



2
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.

3
Topics
  • Basic Internet Concepts
  • Structure of the Internet
  • Common Internet Protocols

4
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!

5
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

6
Internet Architecture
Give me file x
Computer on the Internet holding information -
remote server
Here it is
Desktop computer - client
7
Server/Client Interface
SERVERS
Hardware Software
Software Protocols
CLIENTS
Hardware Software
8
Internet Services
  • The World-Wide Web (Multimedia Information
    Services)
  • Search tools (via the World-Wide Web)
  • Communication (E-mail, Telnet)
  • Retrieval/information transfer (FTP)

9
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

10
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

11
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

12
Browser Customization
  • Toolbar options
  • Link to a specific homepage
  • Using the right click mouse button
  • Using favorites or bookmarks
  • Adding
  • Organizing
  • Editing

13
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/

14
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.h
    tml

15
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.
16
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
17
Hypertext links
Links to other pages are usually underlined or in
another colour of text.
18
Forward and back navigation buttons
The arrow buttons on the tool bar allow users to
move Back and Forward to pages within the
website.
19
Home page button
The House icon on the tool bar will take you back
to the browsers default Home Page.
20
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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