1960FIRST PACKET-SWITCHING NETWORKSDeveloped in USA and used into the US Departmen of Defence.

1982TCP-IPTransmission Control Protocol,the actual we are using.

1973FIRST “INTERNET”First intercontinental connection betweenUSA Universities (already connected betweeneach other) and the University College of London.

1958ARPAAdvanced Research Projects Agencybirth, in order to estabilish US lead inscience and technology applicabe tothe military (USSR was dangerous).

1972E-MAIL & DARPAThe first e-mail program was created by Ray Tomlinson.ARPA was renamed The Defence AdvanceResearch Projects Agency (DARPA).NCP Protocol (Network Control Protocol).

1984SCISSIONARPANET divided into MILNET (formilitary use) and ARPANET.

1992WWWWorld Wide Web releasedby CERN (Ginevra).

1994STARTS THE REVOLUTIONInternet becomes for all.

It’s a computer network that connects computersand devices in a limited geographical area such ashome, school, computer laboratory, office building, closely positioned group of buildings, or an airport.

WANs are used to connect LANs and other typesof networks together, so that users and computers in one location can communicate with users and computers in other locations. Many WANs are built for one particular organization and are private.

The “network of networks” consist in millions of smalldomestic, academic, business and government networkswhich, together, carry enormous amounts of informationand services, such as electronic mail, online chat, file transfert, interlinked Web pages and millions of otherdocuments.With a web browser, one can view web pages that may contain text, images, videos, and other multimedia and navigate between them by using hyperlinks.

Is a method of exchanging digital messages across the Internet or other computer networks.Originally, email was transmitted directly from one user to another computer. This required both computers to be online at the same time, a la instant messenger. Today's email systems are based on a store-and-forward model. Email servers accept, forward, deliver and store messages. Users no longer need be online simultaneously and need only connect briefly, typically to an email server, for as long as it takes to send or receive messages.

The blog is a type of website or part of a website. Blogs are usually maintained by an individual with regular entries of commentary, descriptions of events, or other material such as graphics or video.Most blogs are interactive, allowing visitors to leave comments and even message each other via widgets on the blogs and it is this interactivity that distinguishes them from other static websites.

A social network service is an online service, platform, or site that focuses on building and reflecting of social networks or social relations among people, e.g., who share interests and/or activities. A social network service essentially consists of a representation of each user (often a profile), his/her social links, and a variety of additional services. Most social network services are web based and provide means for users to interact over the internet, such as e-mail and instant messaging. Although online community services are sometimes considered as a social network service. In a broader sense, social network service usually means an individual-centered service whereas online community services are group-centered. Social networking sites allow users to share ideas, activities, events, and interests within theirindividual networks.

Electronic commerce, commonly known as e-commerce or eCommerce, or e-business consists of the buying and selling of products or services over electronic systems such as the Internet and other computer networks.