WORLD WIDE WEB

WEB BROWSER

↪ A web browser, or browser, is application software that allows users to access and view Web pages.

➞ The purpose of a web browser is to bring information resources to the user.
➞ With an Internet connection established, you start a Web browser.
➞ The browser retrieves and displays a starting Web page.
➞ Web pages provide links to other related Web page

• surfing the Web

➞ Downloading is the process of receiving information from a server on the Internet.

➞ Uploading process of transferring  documents, graphics ang other objects from a computer to a server on the Internet.

➞ Some web pages are designed specifically for  micro browsers( mobile devices)

WEB ADDRESS

↪ A Web page has a unique address called a URL( uniform Resources Locator) or web address.

➔ A Web browser retrieves a Web page using its web address.
➔ If you know the Web address of a Web page, you can type it in the address bar at the top of the browser window.


http://www.kmph.matrik.edu.my/fizik/index.html

http://                                         : protocol

www.kmph.matrik.edu.my/   : domain name

fizik/                                            : path

index.html                                  : web page name

WEB PAGE NAVIGATION
➯  Surfing the web

• The activity of using links to explore the web.

➯ A link

• can  be text or an image.

➯ Text links

• May be underlined and/or displayed in a color different from other text on the page.
• The color of the link will change once the link has been visited.

Navigating web pages

➧Most web pages contain hypertext or hypermedia links.

Hypertext ➺ Links in text-based documents.

Hypermedia ➺ Combines text-based links  with graphic, audio and video links.

Tab Browsing

➾ Most current web browsers support tabbed browsing.

➾  Tabbed browsing allows you to open and view and view multiples Web pages in a single browser windows.

WEB SEARCHING

⟶ A primary reason that people use the Web is to search for specific informatiob, including text, pictures, music and video

⟶ The first step in successful searching is to identify the main idea or concept in the topic about which you are seeking information.

1. Search engine (keyword search) - Finds information related to a specific topic.

2. Subject directory( directory search) - Classifies web pages in an organized set of categories.


THE SEARCH ENGINE

⇸ Helpful in locating infromation for which you do not know an exact Web address or are not seeking a particular Web site.
    ⧫ images
    ⧫ videos
    ⧫ audio
    ⧫ publications
    ⧫ maps
    ⧫ people or businesses
    ⧫ blogs
⇸ A program that searches documents for specified keywords and returns a list of the documents where the keywords were found.
⇸ Requires the users to enter a word or phrase, called search text or search query.
⇸Each word of the search text is known as keyword.
⇸ Result of the search is called hits.
⇸ Result can be in the form of:

• web pages
• articles
• images
• audio
• video and etc

SUBJECT DIRECTORY

↪Classifies Web pages in an organized set of categories such as sport or shopping and related subcategories.

➛ eg. AltaVista. Yahoo!, Google, Excite

➛ Provides categorized lists of links arranged by subject.

➛ When click on the category link, the subject directory displays a list of subcategory links.

➛ The disadvantages - users have difficulty deciding which categories to choose as the menus of links presented.