How Streaming Video and Audio Work


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In the early days of streaming media -- the mid-to-late 1990s --
watching videos and listening to music online wasn't always fun. It was a little like driving in stop-and-go traffic during a heavy rain. If you had a slow computer or a dial-up Internet connection, you could spend more time staring at the word "buffering" on a status bar than watching videos or lis­tening to songs. On top of that,everything was choppy, pixilated and hard to see.

Streaming video and audio have come a long way since then. According to Bridge Ratings, 57 million people listen to Internet radio every week. In 2006, people watched more than a million streaming videos a day on YouTube . The same year, television network ABC started streaming its most popular TV shows over the Web. People who missed an episode of shows like "Lost" or "Grey's Anatomy" could catch up on the entire thing online -- legally and for free.



Streaming videos directly to computer


The success of streaming media is pretty recent, but the idea behind it has been around as long as people have. When someone talks to you, information travels toward you in the form of a sound wave. Your ears and brain decode this information, allowing you to understand it. This is also what happens when you watch TV or listen to the radio. Information travels to an electronic device in the form of a cable signal, a satellite signal or radio waves. The device decodes and displays the signal.

In streaming video and audio, the traveling information is a stream of data from a server. The decoder is a stand-alone player or a plugin that works as part of a Web browser. The server, information stream and decoder work together to let people watch live or prerecorded broadcasts.




The basic preview of streaming video [windows 7 first look review]

How Touch pad works ?


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A touchpad (also trackpad) is a pointing device consisting of specialized surface that can translate the motion and position of a user's fingers to a relative position on screen. They are a common feature of laptop computers and also used as a substitute for a computer mouse where desk space is scarce. Touchpads vary in size but are rarely made larger than 40 square centimeters (about 6 square inches). They can also be found on personal digital assistants (PDAs) and some portable media players, such as the Zune using the Zune Pad.



Optimus keyboard


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The Optimus Maximus keyboard, previously just "Optimus keyboard", is a keyboard developed by the Art. Lebedev Studio, a Russian design studio headed by Artemy Lebedev. Each of its keys is a display which can dynamically change to adapt to the keyboard layout in use or to show the function of the key. Pre-orders began on 20 May 2007 for a limited production run from December 2007 to January 2008, with a second batch expected to arrive in February 2008. It first started shipping the week of February 21, 2008.


Overview

The design featured on the studio's website received attention on the web when it was featured on Slashdot on 14 July 2005, and afterwards for a few weeks on other technology websites. The original release date was "end of 2006", however production issues caused the Optimus mini three to be developed first, with the full keyboard delayed until the end of 2007. The keyboard was number 10 in the Wired Magazine 2006 Vaporware Awards and number 4 on the list in 2007 due to its numerous delays and feature reductions.

The Optimus allows for greater user interaction, by dynamically displaying the current function of the keys. For example, when the user presses the shift key, the pictures would change to upper-case versions. It would also make switching between different keyboard layouts (such as English and Cyrillic) rapid, and could make the switch to alternative layouts such as Dvorak easier for people who only have a QWERTY keyboard with no possibility of rearranging the keys. To demonstrate this concept, there are computer renderings showing example layouts for Quake III Arena and Adobe Photoshop.

A newly-revealed (as of January 3, 2008) patent application filed on March 13, 2007 suggests that Apple Inc. may be working on a similar dynamically changeable OLED keyboard


Optimus mini three

Art. Lebedev Studio has released a smaller three-key version of their keyboard, named Optimus mini three. Each of the keys is larger than a standard key. The mini three can be adjusted, through the configuration software, to either a horizontal or vertical orientation.

Initial reviews have been mixed. The keyboard functions as advertised, but it has been criticized for inordinately high CPU usage, slow response time, and buggy configuration software


Optimus Aux

On July 21, 2008, Engadget posted about a new version of the keyboard, named Optimus Pultius. It features 15 OLED keys in a three-by-five arrangement and a USB port. It is expected to be released in late 2008 or early 2009.[6][7] On September 19, 2008, Engadget also reported that the Pultius had been renamed to the Aux[8] and included a new rendering of the rear side showing that there would be two USB ports instead of one.


Variations

Variations with fewer OLED keys will also be available, each upgradeable by replacing static keys with OLED keys after purchase. For keyboards with less than a full complement of OLED "active keys", additional keys can be purchased and installed.

Special Features

Art. Lebedev Studio is expecting to manufacture the keyboard with these features:[3]

* A plastic body (width: 537 mm, depth: 173 mm, height: 38 mm)
* Extra-durable polymer plastic keys (20.2×20.2 mm, visible area 10.1×10.1 mm)
* 48×48 pixel screens, Highcolor mode (65 536 colors, 10 FPS)
* OLED (Organic Light Emitting Diode) screen for keys
* USB 2.0 (or 1.1) connectivity
* 4-5 year lifetime
* A key-saver mode
* Support for animation on keys at 10 FPS minimum
* Ability to form a mosaic using a combination of key images
* Compatibility with Windows XP, Windows Vista and Mac OS X 10.5.1 (and higher).
* An SDK for complete display customization
* Swappable keys and support for keys without displays
* 32 MB SD card for storing basic layouts
* Non-stop glow time at nominal brightness of 20,000 hours, after which display quality will diminish
* An ambient light sensor which can be used to automatically adjust display brightness
* A viewing angle of 160°

What is phishing?


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INTRODUCTION:

In the field of computer security, phishing is the criminally fraudulent process of attempting to acquire sensitive information such as usernames, passwords and credit card details by masquerading as a trustworthy entity in an electronic communication.

phishing

Phishing is a scam in which the attacker sends an email purporting to be from a valid financial or eCommerce provider. The email often uses fear tactics in an effort to entice the intended victim into visiting a fraudulent website. Once on the website, which generally looks and feels much like the valid eCommerce/banking site, the victim is instructed to login to their account and enter sensitive financial information such as their bank PIN number, their Social Security number, mother's maiden name, etc. This information is then surreptitiously sent to the attacker who then uses it to engage in credit card and bank fraud - or outright identity theft.

Many of these phishing email appear to be quite legitimate. Don't be a victim. Look over the following examples of phishing scams to familiarize yourself with the clever techniques used.

How Photocopiers Work ..??


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How Photocopiers Work

A typical business photocopier from Xerox

Walk into almost any business office, and you'll probably find a photocopier ("copier") with a line of people waiting to use it. For most businesses, small or large, the copier has become standard equipment, much like having a desk to work at and a chair to sit in.

What if you had to resort to making carbon copies of important documents, as many people did before copiers came along? Or worse, imagine how tedious it would be if you had to recopy everything by hand! Most of us don't think about what's going on inside a copier while we wait for copies to shoot neatly out into the paper tray, but it's pretty amazing to think that, in mere seconds, you can produce an exact replica of what's on a sheet of paper! In this article, we will explore what happens after you press "Start" on a photocopier.

A typical business photocopier from Xerox

What is Web hosting..?


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A web hosting service is a type of Internet hosting service that allows individuals and organizations to provide their own website accessible via the World Wide Web. Web hosts are companies that provide space on a server they own or lease for use by their clients as well as providing Internet connectivity, typically in a data center. Web hosts can also provide data center space and connectivity to the Internet for servers they do not own to be located in their data center, called colocation.

Operating System (starring Linux)


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Introduction:

Every desktop computer uses an operating system. The most popular operating systems in use today are:

  • Windows
  • Mac OS
  • UNIX

Linux is an operating system -- very much like UNIX -- that has become very popular over the last several years.


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