HTML

inglese

It is only markup language

It is a "presentation" language,that is concerned with the presentation or your document:layout,format

It used tags which refer to the characteristics of your text,but not to its content

It is both a markup and metalanguage

It is concerned with the content of your document

It's tags refer to the content of the text(search engines can find the es you need more easier

HTML is used to create a web e. It defines the e layout, fonts, graphic elements and hypertext to other documents.

HTML 2.0 was defined by the IETF and it contains interactive feautures

The subsequent versions of HTML added new elements such as blinking text,custom backgrounds and tables of contents.

XHTML: is a combination of html 4.0 and xml 1.0 and it will probably became the standard form for web es.

Each links contains the URL address of a web e

Url:is the address for a resource or site on the www

Web Page: is a document created with Html

Web Site: is a collection of different web sited

World wide web: comes from the connection of a different web sited

Browser: is a program which allows you to view an interact with various kinds of internet resource

Hypertext: contains images, text,sound and links to other documents

Markup language: used to structure and format electronic documents

The Metalanguage is the language from which other languages can be derived

Html,xml are used to format the document.

Extensible: You don't need a browser to read the es:applications can read them directly

The user can create his own tags to identify the content of the different paragraphs

Machine code:is the only language who understand the computers.It's based on 1_s and 0_s

An Assembler is a program which translates instruction from low-level languages into machine code

Low-level languages are more similar to machine language and so they are more difficult and restricted to particular machines;High-level languages are more similar to natural languages,they are easier to use and they can be applied to different machines

A function of compilers is to translate instructions from a high-level language into a lower-level language

A Source programs is composed of instructions written in a high-level language

An object program is a program whose instructions have been translated by a compiler from a high-level into a lower-level language.

Java is a programming language developed by Sun Microsystems which is specially designed to run on the web.

Characteristics of Java:	It's more dynamic and simplified the C++
	It's used to create web es,characterised by multimedia effects:moving text,animated drawings,music playing in the backgrounds real-time video and sound and interactive games
	It lets you create now "controls",such as push buttons with special proprieties and check boxes
	It lets you create graphical objects such as charts,graphs,diagrams
	It creates applets
	Programs written with Java are both complied and interpreted
	It's multi-threated:it's composed of different parts processing independently and continuously

An upplet is a small program that is executed automatically with you open a web e written with Java.It allow you to watch animated charters and moving text.

The alternatives of java are:ActiveX, Macromedia's Shockwave

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