The Internet and World Wide Web
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What is the Internet and World Wide Web?

The Internet is a worldwide network of computers that use common communication standards and interfaces to provide the physical backbone for a number of interesting applications.One of the most utilized of these Internet applications is the World Wide Web. What sets the Web apart is an easy-to-use interface to a complex network of computers and data.

1


How Big is the Internet?

As of Jan. 2000, there were over 72 million hosts on the Internet.

About 48% of the people in the United States and Canada have access to the Internet.

About 5% of the world's population has access to the Internet.

2


How Do I Connect to the Internet?

1.Computer .

2.Connection - Phone Line, Cable, DSL, Wireless, ...

3.Modem .

4.Network Software - TCP/IP .

5.Application Software - Web Browser, Email, ...

6.Internet Service Provider (ISP) .

3


What Can I Do on the Internet?

1.Send and receive email messages.

2.Download  free software with FTP

(File Transfer Protocol).

3. Post your opinion to a Usenet newsgroup.

4.Yack it up on IRC (Internet Relay Chat).

5.Surf the World Wide Web.

And much, much moor….

4


What is the World Wide Web?

The Web was invented in 1991 by Tim Berners-Lee, while consulting at CERN (European organization for Nuclear Research) in Switzerland.

The Web is a distributed information system.

The Web contains multimedia.

Information in the Web is connected by hyperlinks.

5


Browsing the Web

1.A web page is a document on the World Wide Web.

2.A web browser is the computer program you use to retrieve and view web pages.

3.The most popular browsers are Microsoft

6


Serving the Web

Web pages are stored in computers called web servers.

Any organization can setup a web server.

A web site is a collection of web pages.

The starting point for a web site sometimes is called a home page

7


  • PC Skills: Scroll Bars

  • Click the button to scroll one line.

  • Click in the trough to scroll a screen full.

  • Press and drag the slider to scroll continuously.

8


Hyperlinks

.Hyperlinks typically appear as highlighted (underlined and colored) phrases.

.Your mouse cursor will turn to a "pointing finger" when you've found a hyperlink.

.Click once to follow a hyperlink.

.Graphics can be hyperlinks.

9


You Can't Get Lost on the Web

.Your browser remembers where you've been.

.Use the Back and Forward buttons to retrace your path.

.Use the Home button to return to your start page.

,Power Skill: Press and hold down on the Back or Forward buttons to see the list of web pages you visited.

10


What's on the Web Page?

Some sites use advertising to subsidize free content.

Most large web sites have some navigation scheme to find information.

Links on the home page will bring you directly to featured content.

11


  • Web Page Load Status

  • The logo animates during page load.

  • The progress bar illustrates page load progress.

  • The status bar displays page load status.

12


Web Security

Secure web pages use encryption to protect from eavesdroppers.

Secure web pages use https.

The lock icon closes on a secure page.

The privacy policy should tell you what the recipient will do with that information

13


Now You're a Real Web Browser

That's everything you need to know to browse the Web.

Now, an even bigger challenge lies ahead: learning how to find the information you want.

14


The Web Adventure Begins

Thank you for attending our class.

Be sure to practice your new skills.

formality

15


The internet and world wide web

Work team :

اسماعيل محمد ابو عامر

منير السقا

محمد السقا

خالد شمالي

خالد المصري

عبد الكريم غربية

صادق صادق

اسراء السلوت

طلب يحيى

محمد عاشور


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