Download Internet

Internet
History
 ’60 = an invention of the US army
 Universities and libraries also start to use
this communication tool
 Protocol + physical network=> backbone
of the internet
 ’90:Tim Berners-Lee and Robert Cailleau
introduce HTML=> WWW is born
What is the Internet?
• Worldwide network
of computers and
servers
• Connected to each
other
• By satellite, modem
and cable
 Host asks info – Server
has got info and
distributes it on request
 Unique IP-address (cfr
156.45.78.99)
 Language between PC’s=
TCP/IP-protocol
The different Services




WWW (World Wide Web)
FTP (File Transfer Protocol)
E-mail
Usenet
The World Wide Web...
Collection of PC’s that share
documents, images and multimedia
over the internet
Main feature=hyperlinks
Communicates via HTTP-protocol
(cfr TCP-IP)
Code to compose web pages =
HTML
Web Browser
Necessary to surf!
User friendly
“Translates” the HTML code to the
page as we see it.
Internet Explorer / Netscape
 Web – Web Pages
 Home page
 Hyperlinks=>click and surf
 URL (uniform resource locator)
 Image Maps
 Chat
 Download