Tim Berners-Lee invented the World Wide Web (WWW) in 1989-1990 at CERN as a way to transfer text and graphics simultaneously over the Internet. The WWW is constructed using HTML and consists of web pages with text, graphics, sounds and other files. It is built upon several technologies including HTTP, HTML, URLs and works by clients using browsers to send requests to servers for web pages.

2. Presentedby:
RASHMI N.
Dos in LIS
University of Mysore

3. CONTENTS:
• Meaning
• Background
• Structure
• Components
• Fundamental concepts
• Advantages and Disadvantages
• Conclusion

4. INTRODUCTION
• The World Wide Web is a way
of exchanging information
between computers on the
Internet.
• The World Wide Web is the
network of pages of images,
texts and sounds on the
Internet which can be viewed
using browser software .

5. Background
1989-1990 – Tim Berners-Lee
invents the World Wide Web at
CERN
 Means for transferring text and
graphics simultaneously
Client/Server data transfer
protocol
Established a common language
for sharing information on
computers

6. Structure
Clients use browser application to
send URIs via HTTP to servers
requesting a Web page
Web pages constructed using HTML
and consist of text, graphics, sounds
plus embedded files
 The entire system runs over
standard networking protocols
(TCP/IP, DNS,…)

7. Four basic phases:
 connection
 request
 response
 close

8. First, the user can use the
browser to connect with the server. The
browser works by using a special
protocol, which is called HTTP to request
a specially encoded text from the web
server. The text is written in HTML,
which tells the browser how to display
the text on the user’s screen. . One can
also use ftp, gopher, telnet and archive
to command the server to search for the
information desired. Web pages are
written in HTML

9. Semantic Components:
Hyper Text Transfer Protocol
(HTTP)
Hyper Text Markup Language
(HTML)
extensible Markup Language
(XML)
Uniform Resource Identifiers
(URIs)

10. The Fundamental concept
of the World Wide Web
Hypertext
•Hypertext is text which contains links to other texts. The
term was coined by Ted Nelson around 1965 .
Hypermedia
•Hypermedia is a term used for hypertext which is not
constrained to be text: it can include graphics, video and
sound.

11. WEB Browser
• A web browser displays a web document and enables
users to access web documents.
WEB Server
•This is a program that waits patiently for the browser to
request a web page. The servers looks for the requested
information, retrieves it and send it to the browser or sends
an error message if the file is not found.
Uniform Resource Locator (URL)
•These are the web addresses. The resource locator is an
addressing system .

12.  Mainly free information
 Low cost of initial
connection
 Rapid interactive
communication
 Facilitates the
exchange of huge
volumes of data
 Accessible from
anywhere
 Has become the global
media
 Danger of overload
and excess
information
 Difficult to filter and
prioritize information
information
 No guarantee of
finding what one is
looking for
 No regulation
 No quality control
over available data

13. WORLD INTERNET USAGE AND POPULATION STATISTICS
JUNE 30, 2016 - Update
World Regions
Populati
on
( 2016
Est.)
Population
% of World
Intern
et
Users
30
June
2016
Penetrati
on
Rate (%
Pop.)
Growth
2000-
2016
Table
% Users
Asia
4,052,652,
889
55.2 %
1,846,2
12,654
45.6 % 1,515.2% 50.2 %
Europe
832,073,22
4
11.3 %
614,979
,903
73.9 % 485.2% 16.7 %
Latin America /
Caribbean
626,119,78
8
8.5 %
384,751
,302
61.5 % 2,029.4% 10.5 %
Africa
1,185,529,
578
16.2 %
340,783
,342
28.7 % 7,448.8% 9.3 %
North America
359,492,29
3
4.9 %
320,067
,193
89.0 % 196.1% 8.7 %
Middle East
246,700,90
0
3.4 %
141,489
,765
57.4 % 4,207.4% 3.8 %
Oceania / Australia 37,590,820 0.5 %
27,540,
654
73.3 % 261.4% 0.8 %
WORLD TOTAL
7,340,159,4
92
100.0 %
3,675,82
4,813
50.1 % 918.3% 100.0 %

15. Internet World Wide Web
The Internet is a global
system of interconnected
computer networks.
Its access is provided by
ISPs.
It runs applications like
www, ftp, html etc.
Web is collection
of text documents
and other
resources, linked
by hyperlinks
and URLs
 Usually accessed
by web browsers
Its an application
running on
Internet

16. WWW is a way of exchanging
information.
Tim Berners Lee invents the World Wide
Web (www) at Cern .
WWW is constructed using HTML
There are basic steps to create Web
pages
Internet and WWW are the two
different concept. WWW is one of the
services that run on internet.

17. Conclusion
• The World Wide Web was have
today was created by some very
bright, talented people who either
had vision, or were inspired by
other talented people’s visions.
• Their perseverance and hard work
brought us to where we are today.
• There is a lot to be learned by
studying these people, their early
work and keeping in mind what
they had to work with.