Transcript What Is the Internet?

City University of Hong Kong
DFM2103 – Information Technology
for Communication (ITC)
Mary Lai
MBA, BSc(Hon)
Email: [email protected]
Jack Lam
MSc(E-Commerce), BEng(Hon),
Chartered Certified E-Commerce Consultant,
OCP-DBA, OCP-ID, OCP-AD, CSA-DBA, SCJP
Email: [email protected]
© Copyright 2010
Course Outline
1. Hardware, Software, Networking, Internet History, Web evolution
2. Web2.0 and the future of World Wide Web
3. Enterprise 2.0
4. Web page vs facebook page
5. Webpage and facebook page exercises (Lab)
6. Internet marketing
7. Web 2.0 documentary and management applications
8. Internet marketing and Web 2.0 tools (Lab)
9. Facility Management Software
10.Web 2.0 documentary and management tools I (Lab)
11.Group Presentation
12.Web 2.0 documentary and management tools II (Lab)
13.Revision class
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Marking Scheme
• Attendance (10%)
• Individual Assignment: (20%)
Web page / facebook page
development
Paperworks
• Group Assignment: (20%)
Group Presentation
• Examination: (50%)
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IT for Communication
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Lecture 1: Web 1.0 Evolution
Agenda
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Hardware
Software
Networking
Internet History
Web Evolution
Web 1.0
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Computer Hardware
• This section shows you about
hardware, which are necessary to
assemble a computer.
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What is Hardware?
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What are Basic Hardware of a
Personal Computer?
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Computer Software
• This section shows you about
Software, which translate your
needs into instructions.
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What is Software?
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Definition of Software
• The set of instructions that tells
the computer what to do and how
to do.
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Types of Software
Types of Software
System Software
Operating System
System Utilities
Application Software
Word Processing
Spreadsheet
Presentation
Database
Web Browser
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Usage of
Operating System
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Starting the computer
Managing application
Managing memory
Handling input and output
Providing the user interface
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Usage of
System Utilities
• To perform maintenance-types
tasks such as managing disk
drives, printers, and other devices
to keep the computer system
running smoothly.
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System Utilities
Programs
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Backup software
Antivirus software
Scanning and defragmenting disk
File compression utilities
System update
Troubleshooting
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Application software
• All of the programs that enable
you to use the computer for your
work.
• Many types of application
software exist that enable user to
perform a variety of task.
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Computer Networking
• Networking, used to connect more
than one computer to each other,
this is shown in this section.
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What is Networking?
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Why Use Networks?
• Sharing…
– Data
– Software
– Printers
– Processing power
– Access to the Internet
• Controlling…
– Security
– Administration
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The Network Server
Printing
Data
Software
Access to the Internet
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The Network Client
Uses Resources
Write file to drive C:
Write file to
drive X:
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Peer-To-Peer Networks
Sharing
Using
Using
Using
Using
Sharing
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Sharing
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Client/Server Networks
Sharing
Using
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Using
Using
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Local Area Networks (LANs)
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Wide Area Networks (WANs)
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Intranet
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Internet
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Internet
II
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History of the Internet
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What Is the Internet? (1)
• A network of networks, joining
many government, university and
private computers together and
providing an infrastructure for the
use of E-mail, bulletin boards, file
archives, hypertext documents,
databases and other
computational resources
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What Is the Internet? (2)
• The vast collection of computer
networks which form and act as a
single huge network for transport
of data and messages across
distances which can be anywhere
from the same office to anywhere
in the world.
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What is the Internet? (3)
• The largest network of networks
in the world.
• Uses TCP/IP protocols and
packet switching .
• Runs on any communications
substrate.
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Web Evolution – 1.0, 2.0, 3.0…
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Web 1.0
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How Did We:
• How did we get information?
• Find out about products and
services?
• Submit application forms?
• Order things from overseas?
• Buy stock?
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Interaction Structure
Before the Web
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Then came Tim…
• Created www in 2 months!
– ‘90 Oct-Nov
– Upload ’91
– and changed the world…
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The original proposal…
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What Tim created…
• Hypertext system to organization
information
– Across networks
– Across platforms
• Invented:
– HTML, URL, HTTP
• Created:
– httpd, WorldWideWeb
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What is World Wide Web?
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WWW – Meaning from
Wikipedia
• “The World Wide Web is a system
of interlinked hypertext
documents accessed via the
Internet”
– With a Web browser, a user views Web
pages that may contain text, images,
videos, and other multimedia and
navigates between them using hyperlinks
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From Simple, But Significant Ideas Bigger Ones Grow
1940s to 1969
We will prove that packet switching
works over a WAN.
Hypertext can be used to allow
rapid access to text data
Packet switching can be used to
send digitized data though
computer networks
We can accomplish a lot by having a
vast network of computers to use for
accessing information and exchanging ideas
We can do it cheaply by using
Digital circuits etched in silicon.
We do it reliably with “bits”,
sending and receiving data
We can access
information using
electronic computers
1945
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From Simple, But Significant Ideas Bigger Ones Grow
1970s to 1995
Great efficiencies can be accomplished if we use
The Internet and the World Wide Web to conduct business.
The World Wide Web is easier to use if we have a browser that
To browser web pages, running in a graphical user interface context.
Computers connected via the Internet can be used
more easily if hypertext links are enabled using HTML
and URLs: it’s called World Wide Web
The ARPANET needs to convert to
a standard protocol and be renamed to
The Internet
We need a protocol for Efficient
and Reliable transmission of
Packets over a WAN: TCP/IP
Ideas from
1940s to 1969
1970
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Before the Web (pre-1991)
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Web 1.0
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Web 1.0
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Web 1.0
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Problem one-way Monologue
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Interaction Structure
After Web 1.0
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CGI – Interaction begins …
(1995)
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Origins of Server-Side
Processing…
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CGI/Perl (1995)
PHP (1995)
ASP (1996)
Java Servlet (1997)
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The Web Gradually
Changed…
• Then blogs appeared (1999)
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User Interaction and Content
Increased
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The Web Gradually
Changed…
• Then blogs appeared (1999)
– ... then comments
– RSS/Atom (1999)
– Tags (2003)
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Large Virtual Communities
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The Web Gradually
Changed…
• Blogs appeared late 1990’s (1999)
– … then Comments
– RSS/Atom (1999)
– Tags (2003)
• Flickr (2004)
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Virtual Communities Grew
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The Web Gradually
Changed…
• Blogs appeared late 1990’s (1999)
– … then Comments
– RSS/Atom (1999)
– Tags (2003)
• Flickr (2004)
• YouTube (2005)
• etc
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Virtual Communities Grew
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~Q&A~
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~ THE END ~
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