presentation on world wide web (www)

THEWORLDWIDEWEB

The World Wide Web (www) is a huge collection of documents called web

pages written in HTML ( Hyper Text Mark-up Language ). These pages are

linked to each other by hyperlink. When a hyperlink takes you to a picture

or video , it is known as hypermedia .

The World Wide Web was conceived in 1990 at CERN Switzerland , at the

European Laboratory for Particles Physics by a young scientist Tim Berners

Lee . The World Wide Web is now managed by a committee which is

known as the World Wide Web Consortium (W3C).

WEB BROWSERS

A web browser can read web pages written is Hyper Text Mark-up

Language ( HTML ). Browsing is using browser software to visit

different websites on the World Wide Web . Browsers give you access

to the millions of web pages on the World Wide Web.

The Some popular Examples of Web Browsers are : Internet

Explorer , Mozilla Firefox, Google Chrome, Opera .

URLEvery websites on the Internet has a

unique address known as its

Uniform Resource Locator (URL).

Give below are URLs of some sites :

http://www.webdunia.com

http://www.youtube.com

TO DOWNLOAD CHROME

To download chrome follow these steps :-

Type google.com in

address bar,1.)

Google.com website

open up

2.)Click Even More

And

Click Google Chrome

3.)

Chrome Browser opens, then click Download Chrome

Google Chrome get download in your PC.

All web browsers heave an address bar . These is

where we type the URL ( Uniform Resource

Locator) or the address of the website we want

to visit .

When you enter the URL in the browser’s

address bar , it causes the Home Page of the

site to appear in your browser. The Home page

of the website will have link to other pages of

the site.

Address Bar

DOWNLOADING AWEB PAGE

Each time you visit a web page , the

browser makes a copy of the web page

in your PC . In other words it download a

page in your computer.

SAVING A WEB

PAGE

To Save the web page do this :

Click the control tool button > save page as >

The save page window appears . Save the web

page in the location you want .

TO COPY TEXT INFORMATION FROM A WEB PAGE

Select the information on the webpage you need to copy by dragging your mouse .

Right click your mouse and click Copy in the short-cut menu .

Open Microsoft Word and click Paste . The select text will be copied .

Save the text file give it a name

TO COPY A PICTURE OR IMAGE FROM A WEB PAGE

To copy a picture or image from web page follow these steps :

o Right click the image you want to save .

o Click Save Picture As from the shortcut menu. The save picture dialog box appears .

o Save the file in the desired location.

SEARCH ENGINES

The Internet is a huge storage house of information in the form

of text, image and videos. To retrieve the relevant information

we need a special software called a Search Engine.

When we do not know the URLs of the sites which contain the

relevant information, we need search engines to save us a lot of effort and time . Google.com, Alta Vista.com, Yahoo.com,

Hotbot.com, and webcrawler.com are some popular search

engines on the world wide web.

WORKING WITH GOOGLE

Google.com is a very popular search engine. To

get to Google.com, type www.google.com in

the address bar of your browser. The Google

homepage open up. Enter the keywords in the

Google Search text box. If you are looking for

information whichinclude text and

images, click the web

option on top of the

text box. Click Images

if you are looking

especially for images.

TIPS FOR QUICK AND ACCURATE SEARCH

1) Give a space and a – ( minus ) sign before specific

words not wanted.

2) Wildcards (*) can be used to search for a string of

characters.

3) There is no need to type entire sentences. Words like of,

and, which, why etc. can be avoided.

4) For a more extensive search try the Advance Search

Google Search Engines.

EXAMPLES OF WEB 2.0 SITES ARE FOLLOWS:

Social Networking sites like Facebook.com,

Orkut.com, Twitter.com, Myspace.com etc.

Music and Videos sites like YouTube.com .

Image sites like Flickr.com, Picasa

Blogging sites like Blogger.com,

WordPress.com

Presented

By:

Directed By : Vandana Ma’am