INTRODUCTION TO WWW for SS3

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INTRODUCTION TO WWW for SS3

Meaning and Definition of WWW
WWW (World Wide Web) is part of the internet that contains linked text, image sound, and video documents. It is also define as an information space where documents and other web resources are identified by URLs, interlinked by hypertext links, and can be accessed via the Internet.

Brief History of WWW
In 1989, London born Timothy Berners-Lee came up with the idea of the web as a way to share
files with others. The idea for the web came while Berners-Lee was working for the European Organization for Nuclear Research (CERN). Scientists by trade, Berners-Lee and others inside CERN were looking for ways to transmit information between each other electronically. To do so, they created a set of tools including a language (html), a browser and other utilities which allowed them to establish
communication.
The first web browser was invented in 1990 by Sir Tim Berners-Lee. His browser was called WorldWideWeb and later renamed Nexus. Many others were soon developed, with Marc Andreessen's 1993 Mosaic (later called Netscape). Today, the major web browsers are Chrome, Safari, Internet Explorer, Opera, Netscape Navigator, Crazy Browser, Maxthron, UC Web Browser, Mozilla Firefox, Edge Etc.
The internet was first introduced into Nigeria in the year 1995. It was in reality a project work by RINAF (Regional Information Society Network for Africa). It was backed up financially by UNESCO. Several workshops were organised in order to educate the Nigerian populace. the first test running was conducted in Obafemi Awolowo University in 1995. By the late 1990's the ''internet '' became a known term among the citizens of Nigeria.


Basic Terminologies of WWW
i. Websites: A collection of related web pages
ii. Webpage: A webpage is a document or information resource on the World Wide Web which can be accessed using a web browser.
iii. Web servers: web servers are computers that stores and disseminate web pages
iv. Web Browser: A web browser (commonly referred to as a browser) is a software application for retrieving, presenting, and traversing (moving through) information resources on the World Wide
v. Web address: A web address, also known as a URL (uniform resource locator), is an Internet or intranet name that points to a location where a file, directory or website page is hosted.
vi. Hyperlink: A link from a hypertext file or document to another location or file, typically activated by clicking on a highlighted word or image on the screen.
vii. Homepage (Main page): The introductory page of a website, typically serving as a table of contents for the site.
viii. Internet Protocol: The Internet Protocol (IP) is the method by which data is sent from one computer to another on the Internet or other network.

Protocols
The two general protocols of WWW are:
1. HTTP (Hypertext Transfer Protocol) is the set of rules for transferring files ( text, graphic images sound, video and other multimedia files) on the world wide web.
2. HTML (Hypertext Markup Language) is a computer language used to build web pages.
Other protocols Include:
a. TCP: Transmission Control Protocol
b. UDP: User Data-gram Protocol
c. SMTP: Simple Mail Transfer Protocol
d. FTP: File Transfer Protocol
e. POP: Post Office Protocol
f. ICMP: Internet Control Protocol
Benefits of WWW
1. Availability of mainly free information
2. Facilitates rapid and interactive communication
3. It is accessible from anywhere
4. Facilitates the exchange of huge volume of data.

Software for website development
Software for website development includes:
1. FrontPage: A computer program from Microsoft for windows and Mac for creating website and web pages.
2. Adobe Dream Weaver: An application used by web designers and developers to create website and applications for use across multiple targets
3. Web plus X4
4. Chrome DevTools
5. Wordpress
6. Sublime Text 2

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