The Amazon Kindle is an e-book reader developed by Amazon.com subsidiary Lab126 which uses wireless connectivity to enable users to shop for, download, browse, and read e-books, newspapers, magazines, blogs, and other digital media. The Kindle hardware devices use an E Ink electronic paper display that shows up to 16 shades of gray, minimizes power use and simulates reading on paper.
Several hardware devices support this platform, including a main "Kindle" line and a parallel "Kindle DX" line. The most recent Kindle device is the third incarnation of the main line, officially named "Kindle", but usually referred to as "Kindle 3". Kindle 3 was released on August 27, 2010. User reports indicate that the new display on the Kindle 3, with Pearl technology, is noticeably superior to that of prior generations.
The Kindle DX line features larger screens than the main Kindle line and is marketed as more suitable for displaying newspaper and textbook content. Amazon has also introduced Kindle software for use on various devices and platforms, including Microsoft Windows, iOS, BlackBerry, Mac OS X (10.5 or later, intel processor only), Android and Windows Phone 7. Content for the Kindle can be purchased online and downloaded wirelessly in some countries, using either standard Wi-Fi or Amazon's 3G "Whispernet" network. Whispernet is accessible without any monthly fee or wireless subscription, although fees can be incurred for the delivery of periodicals and other content when roaming internationally beyond the customer's home country. Through a service called "Whispersync", customers can synchronize reading progress, bookmarks and other information across Kindle hardware devices and other mobile devices.
In May 2011, Amazon announced that over the previous year, they had sold more Kindle books than print books.

On October 7, 2009, Amazon announced an international version of the Kindle 2 that can download new titles in over 100 countries. It became available October 19, 2009. The international Kindle 2 is physically very similar to the U.S.-only model, although it uses a different mobile network standard.
The original Kindle 2 uses CDMA2000, for use on the Sprint network. The international version uses standard GSM and 3G GSM, enabling it to be used on AT&T's U.S. mobile network and internationally in 100 other countries.
Kindle 2 International Version is believed to have a noticeably higher contrast screen, although Amazon does not advertise this. Another review done by Gadget lab, disputes this and actually states that the font appears to be fuzzier than the first generation kindle. The review goes on to say that changes to the Kindle 2 have made it harder to read the smaller font sizes that most books use. On another website they also discuss how the font size is at times worse than the kindle 1's. It appears that whether or not the kindle 2 is clearer or fuzzier than the prior model depends on the font size.
On October 22, 2009, Amazon lowered the price on the international version from $279 to $259 and discontinued the U.S.-only model. On June 21, 2010, hours after Barnes & Noble lowered the price of its Nook, Amazon lowered the price of the Kindle 2 to $189

USEFULL SOFT

On both the platform as windows and mac we need so many software for our dayly work. The user of windows are obviously familier with MICROSORT OFFICE software which can be used for our various office works. It have a various part like MS Acccess, MS Word, MS Powerpoint, MS Excel, MS Outlook,
MS Onenote. All are extensively used to day to do different work like presentation, spreadsheet, email handler(Outlook) and never the less word processor software are always in need for education and business.

The open source soft provide you Open Office which is like MS Office. This programm have all the feature like MS Office.

There are some other soft used to elaborate the work of Windows platform to have a greater control and syschronyzing and ease of operation.

Obviously Antivirous are needed to protect your computer from loosing important data and hacking. There is another tool for windows platform I should name here as It can provide you with all kind of software and hard ware control and satisfactory operation----It is Tune Up soft.

Here is brief information about Windows Registry Tune Up Suite Application:

Windows Registry Tune Up Suite Application offers easy-to-use optimization tools to speed up and improve the stability of your Windows 7, Windows Vista, or Windows XP PC. Regardless of your level of expertise, Windows Registry Tune Up Suite Application safely cleans, repairs, and optimizes the registry and automatically backs up changes for future recovery. Now includes essential tools to fix Windows security loopholes. Permanently erase your Internet activity, personal files, and free space to keep your information away from prying eyes.

http://www.digeus.com/products/regcleaner/windows-registry-tune-up-suite-application.html">Windows Registry Tune Up Suite Application


Windows Registry Tune Up Suite Application


This can help you to improve your computing performance.

BUILD A ROBOT

Robots are one of the important invention of the modern science. with out definition we know that a system that can do something using software or hardware in accordance with provided automation program in it.

BATTERIES

To run your system you need power and so what you need to know about battery. From small lithium ion battery of your wristwatch there are hundreds types of battery around you including your UPS which have a battery with 40A-HR rating of it

COMMON IC

I dont know the amount of IC in the world. this would be a stupid thinking of it. If you like to know about a IC then

TRANSFORMERS AND COILS

Coils are another important component in any analog circuit and extensively used in power electronics. In a ordinary circuit due to its inductance it oppose the change of current flow in the line which it is connected. A magnetic flux is stored in coil which decay with time and stored energy is released.  A filter circuit include a coil and resistance which separate high or low frequency signal and thus demodulation circuit need coil. A speaker have coil which vibrate when current flow in it as current cause magnetic field opposite to a strong permanent magnet and thus sound occur on the spider or paper cone.

RESISTANCE COLOR CODE

One of a important think in practical electronics is resistance color code used to show the value of a resistance. Value of a resistance is expressed in color band on a resistor. Different color gives the digits of the value of the resistance. Generally 4-band and 5-band resistances are available. For a 4-band resistance first 2-band give the numeric value and the third band is the power of the 10. This is same for the 5-band resistance. The last band is the tolerance band. Different tolerance are 20%,15%,10%,5%,2%,1% and .5% are available. The less the tolerance the more the price of it.