José GuimarãesTurma: Gestão de RedesCultura Língua e Comunicação Estrangeira

Escola Secundária Fontes Pereira de Melo

José GuimarãesTurma: Gestão de RedesCultura Língua e Comunicação Estrangeira

Escola Secundária Fontes Pereira de Melo

INTRODUCTIONINTRODUCTION

I address the following aspects: History of the Internet What is the Internet What is needed to access the Internet Difference between Web and Internet Email Browsing the WWW The Future

The origin The origin

The Internet has emerged from military research, at the height of the Cold War period in the 60s, USA.

It was to develop a communications network that connects computers over the defense and some major American universities, so that in the event of a nuclear attack, communications were not interrupted.

History of InternetHistory of Internet In 1972, the DARPA (Defense Advanced Research Projects Agency) was

the ARPANET, ensuring that the links exist between all bases and defense, in case of destruction of one, communication would be established automatically through another base.

The ARPANET worked through a system known as package switching, which is a system of data transmission in computer network in which information is divided into small packets, which in turn contains words of data, the recipient's address and information allowing reassembly of the original message.

What is the Internet?What is the Internet? The Internet, or only Net,

is a global network of computers linked by telephone lines common, private lines of communication, satellites and other telecommunications services.

Use of protocolsUse of protocols Allow any computer that can connect to the network. Language used by computers for possible communication between them. Types of protocols:

- TCP (Transmission Control Protocol) - Protocol on the set of rules to establish the connection and communication.

- IP (Internet Protocol) - Protocol that defines how a particular computer is recognized on the Internet or your IP address.

- The IP address is a set of four numbers from 0 to 255, separated by one point, according to the following structure: ***. ***. ***. ***

- DNS (Domain Name System) - Protocol that every IP address, a name associated, easier to be memorized by users.

What is needed to access the What is needed to access the Internet?Internet?

Computer

Modem (internal, external or PCMCIA)

Normal telephone line, ISDN line, ADSL or cable connection

Service provider

Difference between Web and Difference between Web and InternetInternet

Internet- It is a global network of interconnected computers that

communicate among themselves through existing telecommunications networks.

, World Wide Web WWW or Web- It is a whole lot of information that exists in the world

housed in hundreds of thousands of computers called Web servers.

Basic ServicesBasic Services World Wide Web – WWW

Email

Videoconferencing – Netmeeting

Discussion Groups – Newsgroups

Mailing Lists

Communication in Real Time - Chat

Word Wide Web - WWWWord Wide Web - WWW

When we talk about Word Wide Web - or simply WWW, we are talking about in the huge set of documents on the Internet.

The documents on the Internet are written in special languages, namely HTML and Java and to view these documents is appropriate to use a program called browser.

Word Wide Web - WWWWord Wide Web - WWW

There are several browsers, some free access on the Internet.

Examples:- Nestscape Navigator- Internet Explorer- Opera- Firefox

EmailEmail A system that allows the sending

and receiving electronic messages by computer, to any user of the Internet, provided that both the sender and the recipient have an email address.

In addition to economic, e-mail has the advantage of being a communication system very fast.

Videoconferencing - Videoconferencing - NetmeetingNetmeeting

This service allows for oral dialogue (conversation) with others:- In business, the holding of

meetings between people located in different parts of the country.

- In health centers, with lack of doctors to hold consultations routine.

- In institutions for distance learning.

The Future of the InternetThe Future of the Internet

The Future of the InternetThe Future of the Internet The means chosen to access the Internet will be:

Constellations of satellites, global networks for broadband, communication of data on electricity networks, cable TV networks with two-way transmission of data, new digital mobile phones than that of normal voice communication, will have direct access to files and databases as if we were to use a normal computer, among other devices, as smart phones, terminals, pagers and web access as:Smart TVs, Cyber-kiosks or other Web and kiosks.

ConclusionConclusion

The Internet’s current trajectory is one of lost opportunity. Its salvation, Zittrain argues, lies in the hands of its millions of users. Drawing on generative technologies like Wikipedia that have so far survived their own successes, this book shows how to develop new technologies and social structures that allow users to work creatively and collaboratively, participate in solutions, and become true ”netizens”.

WebgraphyWebgraphy

http://en.wikipedia.org/wiki/History_of_the_Internet http://www.lonja.de/motion/mo_history_internet.html http://images.google.pt/images?gbv=2&hl=pt-PT&q=internet&sa=N&start=0&ndsp=18 http://www.youtube.com/watch?v=MU1tGmRmBnI http://futureoftheinternet.org/