(Leertaste
drücken um weiter zu springen)
Kunde
legt Ware auf BandPersonal
scannt WarePersonal
nennt Preis
Kunde
gibt: Geld
(= größer/gleich Preis
)Personal
gibt: (Geld-Preis
) an Kunde
DARPA: Defense Advanced Research Projects Agency
FTP
=File Transfer ProtocolKommunikation
TCP/IP
Transmission Control Protocol
/Internet
Protocol
TCP/IP
30% des Internets im Jahre 2005
DNS
Domain Name System
www.uni-weimar.de
= 141.54.1.34
www.example.com ^ ^ ^ | | | | | Top-level domain | domain | subdomain
Oberste Kontrollstelle
.com
, .org
, .net
, .us
, … -> USA.de
, .fr
, .se
, .is
-> Div. LänderWWW
Usenet
Path: gmdzi!unido!mcsun!cernvax!info
From: timbl@info .cern.ch (Tim Berners-Lee)
Newsgroups: alt.hypertext
Subject: WorldWideWeb: Summary
Keywords: heterogeneous hypertext, web, source, protocol,
index, information retrieval
Message-ID: <6487@cernvax.cern.ch>
Date: 6 Aug 91 16:00:12 GMT
References: <6484@cernvax.cern.ch>
Sender: n...@cernvax.cern.ch
Lines: 84
In article <6...@cernvax.cern.ch> I promised to post a short summary of the
WorldWideWeb project. Mail me with any queries.
WorldWideWeb - Executive Summary
The WWW project merges the techniques of information retrieval and hypertext to
make an easy but powerful global information system.
The project started with the philosophy that much academic information should
be freely available to anyone. It aims to allow information sharing within
internationally dispersed teams, and the dissemination of information by
support groups.
Reader view
The WWW world consists of documents, and links. Indexes are special documents
which, rather than being read, may be searched. The result of such a search is
another ("virtual") document containing links to the documents found. A simple
protocol ("HTTP") is used to allow a browser program to request a keyword
search by a remote information server.
The web contains documents in many formats. Those documents which are
hypertext, (real or virtual) contain links to other documents, or places
within documents. All documents, whether real, virtual or indexes, look similar
to the reader and are contained within the same addressing scheme.
To follow a link, a reader clicks with a mouse (or types in a number if he or
she has no mouse). To search and index, a reader gives keywords (or other
search criteria). These are the only operations necessary to access the entire
world of data.
HTML
-DokumenteBrowser
lädt die Dokumente, stellt sie darhttp://example.com/hello.html
— “gib mir das Dokument hello”http://example.com/give-me-a-beer.plz
— “gib mir ein Bier?”“Every time you email a file to yourself
so you can pull it up on your friend’s laptop,
Tim Berners-Lee sheds a single tear.”
ftp://max.server/Filme/Film.avi
hello world
hello world
Stelle eine Web-Seite online
index.html
hello world
”Textdatei: index.html
Notepad.exe
TextEdit.app
GEdit
, Leafpad
, …DIY
eigener Server?Bei Fragen:
ktl@178.is
http://bit.ly/ktlwiki