The e-book readers Amazon Kindle are designed and marketed by Amazon.com. These devices enable users to shop for, download, browse, and read digital media, such as e-books, newspapers, blogs or magazines via wireless networking.
Kindle hardware has evolved from the original Kindle introduced in 2007 and a Kindle DX line introduced in 2009. Devices now include Kindle Keyboard, Kindle Paperwhite, Kindle Fire (a tablet computer with a reader app and a color display) and other readers.
Kindle software can be used on various devices and platforms, including Microsoft Windows, iOS, BlackBerry, Mac OS X (10.5 or later, Intel processor only), Android, webOS, and Windows Phone. Amazon also has a “cloud” reader to allow users to purchase and read Kindle books from a web browser.
Content for the Kindle can be purchased online and downloaded wirelessly, using either standard Wi-Fi or Amazon’s 3G “Whispernet” network, accessible without any monthly fee or wireless subscription (fees can be incurred for the delivery of content when roaming internationally beyond the customer’s home country). Through Whispersync customers can synchronize reading progress, bookmarks, and other information across Kindle hardware and other mobile devices.
A book may be downloaded from Amazon to several devices at the same time. The devices sharing the book must be registered to the same Amazon account. A sharing limit typically ranges from one to six devices, depending on an undisclosed number of licenses set by the book publisher. When a limit is reached, the user must remove the book from some device or unregister a device containing the book in order to add a book to another device.
Specific Kindle sales numbers have not been released by the company; however, millions of people now own Kindles.
Let’s also remind you that Kindle devices do not support the EPUB file format used by many other e-book readers. Instead, they are designed to use Amazon’s own e-book formats: AZW, and, in fourth generation and later Kindles, AZW3, also called KF8, intended for reflowable, richly formatted e-book content and support DRM restrictions. Amazon also offers an email-based service that will convert GIF, PNG, and BMP graphics to AZW.
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