Wednesday, October 26, 2011

HTML 5





What is HTML 5?


HTML 5 is still under developing language That Web Hypertext Application Technology Working group (WHA&WG) & World Wide Web conortiup  (W3C)  working together and developing this HTML5.



What’s new in HTML5?

In Html 5 there is lot of new features. For example  <video>,<audio>and<canvas> are some of elements that used in HTML 5.these features help full to insert multimedia and graphical content to web without having plugging or other things. In HTML 5,we can do like drag and drop and crossers document massages .there a  new input types like e-mail and date time and some of elements    <cite>,<a>,<menu> have been change.

  
  

Browser compatibility for HTML 5   

There is no browser completely support in HTML5.only internet explorer support for HTML5.



Deferent between Logical style and Physical style.




We are working with a text in HTML,There are two deferent character tags 
         1. Physical style
         2.Logical style

What are the Physical styles?

<html>
     <head>
     </head>
     <body>
           <font size="6"
           <p><b>Hi I am Pubudu</b></p>
           <p><i>Hi I am Pubudu</b></i>
           <p><s>Hi I am Pubudu</b></s>
           <p><small>Hi I am Pubudu</b></small></p>
           <p>We<sub>2</sub></p>
           <p>Hi im <u>Pubudu</u></p>
           </font size="6">
     </body>
</html> 



What are the Logical styles? 
<html>
     <head>
     </head>
     <body>
           <font size="6"
           <p><em>Hi i am Pubudu</em></p>
           <p>Hi i am<strong>Pubudu</strong></P>
           <p>Hi <code>i am</code> Pubudu</p>
           <p><samp>Hi</samp> i am Pubudu</p>
           <p>Hi i am <kbd>Pubudu</kbd></p>
           <p>Hi i am <ins>Pubudu</ins></p>
           <p><del>Hi</del> i am Pubudu</p>
           </font size="6">
     </body>
</html>

Wednesday, October 19, 2011

Hypertext Markup Language (HTML)

History and Evolution 

What is this hypertext markup language? In short it means that is the language used to design web pages. HTML was born in 1980, for a system to “CERN”. The CERN is the European organization for nuclear research. First time those researchers won’t to share their documents. So Sir Tim Berners-Lee had written a software name call “ENQUIRE”. It was a simple hypertext program. After that it was the predecessor to the World Wide Web.

After that the first HTML document born in 1991 called “HTML Tag” is the simple design of HTML

How it works.

HTML is written by according to HTML elements. The text mixed with markup Tags. That tags enclosed in angle brackets. Like (<H1>Interdiction </H1>) according to this first tag is starting tag and the last tag is the end tag. We can call they are opening tags and closing tags .using this things we can create web page. We can add text, tags, comments, images for our web page. 

Basic tag system

This is are the basic tags we used in web pages
<html>
           <head>

           <title>
                      <p> My Self<p>

           </title>

           </head>

           <body>
                       <p>I am Pubudu Ratnasiri.I am from Kandy.</p>
            <br />

            <img src="pubudu/Photo.JPG">

            </body>

<html>




After that we can got our web page like this….


Link:

Advantages and Disadvantages


Advantages


-  We can make a web page using not pad. We don’t need to use any other software.

 - HTML easy to work.

 - Not only web pages, we can create programs like games and text editor.  

Disadvantages

- HTML is not a programming language, so we can’t do things like save user inputs.

-we have to learn murk up language to HTML.

-HTML is complex and incompatible.

Other technologies working with HTML.

Cascading style sheet (CSS) 

This is the style sheet language. This application is common style for a web page. 

 PHP

We can used PHP for web development this is also scripting language.

ASP.NET


This is a web application frame work from this we can build dynamic web site, web applications and web servers. 



Java Script

This is also scripting language. And this a multiy –pardaium language















Wednesday, October 12, 2011

The Evolution of Touch Interfaces.

What is the Computer Interface?

The computer Interface is like a “tool” and “Concept” that refers to a point of interaction between components. It is applicable at the level of both hardware and software.

What are the computer interfaces?
         
  1.         Physical Interfaces.
  2.        Text-user Interfaces.
  3.        Graphical-user Interfaces.
  4.         Web Interfaces.
  5.        Touch Interfaces.
  6.        Natural user Interfaces.  

The Evolution of Touch Interfaces.

What is the Touch user Interface?

A Touch user interface is a computer-pointing technology based upon sense of touch.

History of Touch Interfaces.

In 1954 Hugh Le Caine demonstrating the prototype of the ''Touch Sensitive Organ'' Le Caine began work on this instrument between 1952 and 1954 at his home studio. He brought the prototype organ to the National Research Council lab in 1954 and considerable development took place over the next year.


In 1971, a "touch sensor" was developed by Doctor Sam Hurst. He was an instructor at the University of Kentucky. This sensor called the "Elograph" was patented by The University of Kentucky Research Foundation. The "Elograph" was not transparent like modern touch screens, however, it was a significant milestone in touch screen technology and The Elograph was selected by Industrial Research as one of the 100 Most Significant New Technical Products of the Year 1973.



The first true touch screen incorporating a transparent surface came on the scene developed by Sam Hurst and Elographics. In 1977, Elographics developed and patented a resistive touch screen technology, the most popular touch screen technology in use today.

In 1977, Siemens Corporation financed an effort by Elographics to produce the first curved glass touch sensor interface, which became the first device to have the name "touch screen" attached to it. On February 24, 1994, the company officially changed its name from Elographics to Elo Touch Systems.



1979

3M patented surface capacitive technology

1981
Tactile Array Sensor for Robotics

1982
Elo Touch Systems invented the resistive touch sensing technology
Flexible Machine Interface, the first multi touch input system, was published (Mehta, Nimish, A Flexible Machine Interface, M.A.Sc. Thesis, Department of Electrical Engineering, University of Toronto, 1982)

1984
Bob Boie at Bell Labs invented the first multi touch screen

1985
Zenith patented the Surface Acoustic Touch Panel System
Input Research Group at University of Toronto developed multi-touch tablet

1987
Elo Touch Systems puchased SAW technology from Zenith

1990
Nissha developed the FineTouch touch panel

1993
Apple’s Original Newton Message Pad H1000 was introduced

1995
MicroTouch launched the first projected capacitive touch sensor

1996
Palm introduced Palm Pilot 1000, the first commercially successful PDA with the resistive touch screen

2000
3M acquired MicroTouch

2001
Zytronic developed ZyTouch projected capacitive touch sensor and applied it to the first Tablet PC prototype
Microsoft demonstrated the first public prototype of Tablet PC
MERL developed Diamond Touch multitouch system using projected capacitive touch technology

2002
Sony published a paper about SmartSkin multitouch system. SmartSkin adopted mutual capacitive sensing that is also used in iPhone.

2003
Next Window and Smart Technologies started producing optical touch panels
Finger Works developed input peripherals based on the multi touch technology

2004
Nintendo launched Nintendo DS, a handheld gaming device with dual screen and a touch display

2005
TMD start mass production of touch-embedded TFT using optical sensors
Jeff Han demonstrated the first FTIR multi touch

2007
Apple unveiled iPhone
AUO demonstrated in-cell touch panel technology at Yokohama FPD conference
Microsoft unveiled Microsoft Surface

2008
HP released multi touch Tablet PCs

2009
Dell launched a multi-touch all-in-one PCs
Touchco was founded
2010
Apple released iPad
Amazon acquired Touchco


Monday, October 10, 2011

Evolution of Internet

The Internet was the result of some visionary thinking by people in the early 1960s that saw great potential value in allowing computers to share information on research and development in scientific and military fields.

J.C.R. Licklider of MIT, first proposed a global network of computers in 1962, and moved over to the Defense Advanced Research Projects Agency (DARPA) in late 1962 to head the work to develop it. Leonard Kleinrock of MIT and later UCLA developed the theory of packet switching, which was to form the basis of Internet connections.

Lawrence Roberts of MIT connected a Massachusetts computer with a California computer in 1965 over dial-up telephone lines. It showed the feasibility of wide area networking, but also showed that the telephone line's circuit switching was inadequate.

Kleinrock's packet switching theory was confirmed. Roberts moved over to DARPA in 1966 and developed his plan for ARPANET. These visionaries and many more left unnamed here are the real founders of the Internet.The Internet,then known as ARPANET. 

Charley Kline at UCLA sent the first packets on ARPANet as he tried to connect to Stanford Research Institute on Oct 29, 1969. 

After the Evolution of Internet now web designers is the growth of smaller devices to connect to the Internet. Small tablets, pocket PCs, smart phones, ebooks, game machines, and even GPS devices are now capable of tapping into the web on the go, and many web pages are not designed to work on that scale.


As the Internet has become ubiquitous, faster, and increasingly accessible to non-technical communities, social networking and collaborative services have grown rapidly, enabling people to communicate and share interests in many more ways. Sites like Face book,Twitter,KLinked,You Tube,Flicker,Second Life,Delicious,Blogs,Wikis and many more let people of all ages rapidly share their interests of the moment with others everywhere.