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Computing and IT in the WorkplaceCT006-1
Internet & The World Wide Web
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CT006-1 Computing And IT in the Workplace Chapter 1 2
Learning Outcomes
At the end of this section,YOU should be able to:
To describe the evolution and development of the Internet
To discuss and explain some of the common usage of Internet in modern
society
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CT006-1 Computing And IT in the Workplace Chapter 1 3
Topics we will cover
The Internet
History of the Internet
The World Wide Web
E-Commerce
Other Internet Services
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CT006-1 Computing And IT in the Workplace Chapter 1 4
What is the Internet?
Worldwide collection of networks that connects
millions of computers
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Why do users access the Internet?
Information
Shopping
Banking and Investing
Classes
Entertainment
Communications
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The History of Internet
Goal:
To function if
part of network
were disabled
Becamefunctional
September 1969
ARPANET
Networking project by
Pentagons Advanced
Research Projects
Agency (ARPA)
Goal:
To allow scientists
at different
locations to share
information
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The History of Internet
How has the Internet grown?
Today
More than 150 million host nodes
1984
More than 1,000 host nodes
1969Four host nodes
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Who controls the Internet?
World Wide Web
Consortium (W3C)
Oversees research, sets
standards and guidelines Tim Berners-Lee, director
Internet2 (I2)
Internet-related research and
development project
Develops and tests advancedInternet technologies
No oneccit is a public, cooperative, and
independent network
Several organizations set standards
The History of Internet
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How the Internet Works
High-speed
connection
Slow-speed
technology
Dial-up accessmodem in yourcomputer uses a
standard telephone lineto connect to the Internet
Digital subscriber line (DSL),
cable telephone Internet
services (CATV), cable modem
provide connections using
regular copper telephone lines
Connection is always on
whenever the computer
is running
Connection must be established
each time you log on.
Slow but inexpensive
How can you connect to the Internet?
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How the Internet Works
What are ways to access the Internet? ISP, Regional
or National
OSP (AOL and
MSN, for example)
Wireless Internet
Service Provider
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How might data travel the Internet using atelephone line connection?
How the Internet Works
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What is a domain name?
Number that uniquely identifies
each computer or device
connected to Internet
How the Internet Works
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Chat
(4)
(1)
E-mail
(2)
Web
(3)
File transfer
(5)
Message board
(6)
Instant messaging
What are some services found on the
Internet?
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What is the World Wide Web (WWW)?
A worldwide collection of electronic documents
Each electronic document is called a Web page
Also called the Web
Can contain text, graphics, sound, video, and built-in connections
A Web site is a collection of related Web pages
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World Wide Web
What is a Web browser?
Microsoft
Internet
Explorer Netscape
Mozilla
Program that allows you to view Web pages
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World Wide Web
How can you establish a connection and start theWeb browser?
Step 2.
If necessary,connect to the
Internet
Step 3.Connection to the
Internet occurs, and a
home page displays
Step 1.Click the Web browser
program name
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World Wide Web
What is a home page?
The first page that a Web site presents
Often provides connections to other Web pages
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World Wide Web
The process of a computer receiving information
Depending upon connection speed, downloading can
take from a few seconds to several minutes
What is downloading?
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World Wide Web
What is a URL? Unique address for aWeb page
A web serverdelivers
the Web page to yourcomputer
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World Wide Web
What is a hyperlink (link)?
Item found elsewhere
on same Web page
Different Web page
at same Web site
Web page at a different
Web site
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World Wide Web
What is a search engine?
Program used to find Web sites and Web pages by
entering words or phrases called search text
Also known as keywords
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Electronic Commerce
Business to business (B2B)Business providing goods and
services to other businesses
Consumer to consumer (C2C)One consumer sells directly to another
What is e-commerce?
Business to consumer (B2C)Sale of goods to general public
Short for electronic commerce
Business transaction that occurs over
the Internet
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Other Internet Services
What is e-mail? Short for electronic mail The transmission of messages and files via a
computer network Messages can consist of simple text or can contain
attachments, such as documents, graphics, or audio/videoclips
Internet access providers usually provide an e-mailprogram
Some Web sitessuch as MSN Hotmail and Yahoo!
provide free e-mail services One of the original services on the Internet
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Other Internet Services
How do you send an e-mail message?
Step 1.Start an e-mail
program
(Microsoft
Outlook, for
example)
Step 2.Click the New Mail Message button
Step 3.Enter the recipients
e-mail address, the
subject, and the
message
Step 4.Click the Insert file button if
you want to attach a picture, for
example, and click Send
Step 5.The recipient opens the
message
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Other Internet Services
What is an e-mail address? Unique name that consists of a user name and
domain name that identifies the user
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Other Internet Services
How does an e-mail message travel?
Step 1.Using e-mail
software, you
create and send
message
Step 2.Your software
contacts software
on your ISPs
outgoing mail
server
Step 4.When recipient uses
e-mail software to check
for e-mail messages, the
message transfers fromincoming mail server to
recipients computer
Step 3.Software on outgoing mail server
determines best route for data and sends
message, which travels along Internetrouters to recipients incoming mail server
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Other Internet Services
What is a mailing list? Group of e-mail
addresses given a singlename
When a message is sent
to the mailing list,everyone on the listreceives the message
To add your name to a mailinglist you must subscribe to it; toremove your name you mustunsubscribe
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Other Internet Services
What is FTP?
File TransferProtocolInternet standard that allows
you to upload and download files with other
computers on the Internet
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Other Internet Services
What are newsgroupsandmessage boards? Newsgroup
Many Web sitesuse message
boards because
they are easier to
use
Message board
Online area where users discuss a particular
subject
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Other Internet Services
What is a chat? Real-time typed conversation
that takes place on a computer
Chat room is location on
server that permits users
to discuss topics of interest
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Other Internet Services
What is instant messaging (IM)?
Step 2.The server determines if any of your
established friends, family, or
coworkers, calledbuddies
, are online
Step 3.You send instant
messages to anonline buddy
Step 1.
Login to the IMserver
IM Server
Step 4.Your Instant Message travels
through a messaging server and
then to the online buddy
messaging Server
A real-time Internet communications service that notifies you whenone or more people are online and allows you to exchange
messages or files
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Internet Benefits to Organizations
Connectivity and Global Reach
Reduced Communication Cost
Lower Transaction Cost
Reduced Agency Cost
Interactivity, Flexibility and Customization
Accelerated Distribution of Knowledge
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Other Internet Services
What is a mailing list? Group of e-mail
addresses given a singlename
When a message is sent
to the mailing list,everyone on the listreceives the message
To add your name to a mailinglist you must subscribe to it; toremove your name you mustunsubscribe
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Review Questions
The Internet has had tremendous impact onbusiness. Explain the benefits and relate it to thecase study given.
Explain the types of web sites available.
Explain the processes involved in sending out anInstant message.
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Q & A
Question and Answer Session
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Topic and Structure of next session
Human Aspects of Computing
What we will cover next
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Assignment
Internet has changed the way we live today.
Justify this topic by a short write up, not more than 2 pages providing valid
references to support your views.
Your write up should have
1. Introduction
2. Main content
3. Conclusion
4. References / Bibliography
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