•by Maria Rita Marruganti

DIFFERENT WAYS OF SENDING INFORMATION

• Passive e.g. newspapers, radio, television. You don’t produce, just receive information.

The flow of information is

unidirectional.

• Interactive e.g. telephone Listening and talking people interact

each other. The flow of information is bidirectional.

WHAT ABOUT COMPUTER?

• In front of the computer we receive images, sounds together with written words but we can input information and data determining different devolopments and results.

• The girl can receive and send information of any form. The flow of information is birectional (interactive)

•display

•mouse

•computer

•speaker•keyboard

HYPERTEXT

A machine-readable

text that forms

an interconnected

structure is a

HYPERTEXT: WHAT IS IT?

• - It’s a great means of comunication.

• - It can handle a lot of information.

• - It’s an assembly of pages.

• - Data that contain links to other relevant data.

• - The user can rewrite and edit the product.

• - An application can have different developments and results.

The use of different communicationcodes is MULTI-MEDIA:system that combines text with audio, video and still images to create an interactive application

From the latin words:

• multus, a, un (more than one) and

• medium (means of communication).

HYPERMEDIA: What is it?

• It is a method of structuring information in a mixture of media (text, video, graphics, sound) in such a way that related items of information are connected by links or threads called hyperlinks

HYPERMEDIA: the specific element

• -The specific element is the computer. Using it we can handle a great deal of data in specific and different fields in a short time.

CDS

HYPERTEXT INTERACTIVE

MULTIMEDIA

HYPERMEDIA

PERSONALCOMPUTERS

•We can carry out research in a shurter time

•We can rewrite the data we receive producing information

•Compact disks on which audio or video sequences or other data are recorded digitally and replayed using a laser

•The specific elements of hypermedia. Using them we can handle a great deal of data in specific and different fields in a shurt time

HYPERMEDIA: STRUCTURE MAIN ELEMENTS

• Information units or knots

• Links or anchors

• Navigation tools

HYPERMEDIA: LINKS

• Links connect different pages: it’s possible to link a word to another page containing its explanation

• We can have several links in the same page as if the hypertext were a web

• Links can be:

hot words

hot image areas

buttons

HYPERMEDIA : PATHS

• A hypertext must contain the possibility to follow different paths (long or short, across or down).

Choosing links allows:

• the author to stucture and control the system

• the user to improve the undestanding and to be aware of what he is doing.

HYPERMEDIA: KNOTS

• An information unit or page. It is a complete piece of information: it can be a concept or a definition even an image. No matter whether we use few words or a great deal of words.

HYPERMEDIA AND BOOKS : DIFFERENCES

HYPERTEXT

• There are different paths,

different levels of reading.

• The user can rewrite and edit it.

BOOKS

• The pages follow one another

• There is a beginning and an end

H T M LHYPERTEXT MARKUP LANGUAGE

• All the pages are formatted in html . It’s an important point at which browser and host computers need to agree. In particular the HTML tells the browser how the pages are formatted.

H T T PHYPERTEXT TRANSFER PROTOCOL

• It is a standard communication protocol, an assembly of rules used by computers to communicate in order to transfer information (hypertext)

HTML & HTTPTHE HYPERTEXT ABSTRACT MACHINE

• The combination of HTML and HTTP is the only point at which client and server computers need to agree. The user can use a variety of software running on a variety of computers as long as they talk HTTP and understand HTML formatted files.

WORD WIDE WEB

• The most widely used system for hypertest access over the internet is the Word Wide Web, normally abbreviated WWW.

• The WWW uses a client - server architecture for distributed hypertext that can be accessed over the INTERNET

HYPERMEDIA AND THE INTERNET

• A link can be connected to a page of the same hypermedia or to a page in a different hypermedia in the same computer. It can be connected to other hypermedia pages that are in different computers all over the world. These computers have to be on Internet.

HYPERMEDIAHOW DO THEY WORK?

• Using images, words,sounds and links hypermedia work as human brain does: associating ideas. Each association is similar to a link between two pages of hypermedia.

AN IDEAL HYPERMEDIA

• The interface must be concise and understandable.• It must contain different reading paths, with the

possibility to follow individual tracks.• Systems must be open to receive user’s

modifications and contributions• It must contain motivated and not only aesthetic

use of multimedia.• The most important ingredient is the content.

HOW TO BUILD UP HYPERMEDIA

Three different stages are necessary.

• project

• search for contens

• implementation

PROJECT

• A good organization of the links among the contents makes the project more usable. In this phase you have to determine what and how many texts, images, videos to insert, to decide how to organize the information.

SEARCH FOR CONTENTS

• The data can make hypermedia rich in content. Texts, images, videoclips must be found in digital format; perhaps you need to create them using appropriate programmes.

IMPLEMENTATION

• The navigation interface can make the hypertext more interesting and understandable.

• It means to assemble the contents according to the project.

• A compromise is needed between the big deal of information and an easy content comprehension.