Amazon unveils its new Kindle electronic reader

Amazon has unveiled a third version of its popular electronic reader, Kindle. With a larger screen, it's adapted for magazines, books and newspapers.Amazon unveiled a large-screen version of its popular Kindle electronic reader on Wednesday, promoting it as a handier device for reading newspapers, magazines and textbooks.The Kindle DX costs 489 dollars and features a screen which at 9.7 inches (24.6 centimeters) is 2.5 times larger than the six-inch (15.24 cm) screen on the earlier versions of the Kindle, which cost 359 dollars.Amazon said the latest Kindle, which will ship this summer, has a built-in PDF document reader and 3.3 gigabytes of memory which can store up to 3,500 books compared with 1,500 books for the Kindles 1 and 2.While the earlier versions of the Kindle were mainly book readers, Amazon touted the latest version as better suited to reading newspapers, magazines and textbooks."The larger electronic paper display with 16 shades of gray has more area for graphic-rich content such as professional and personal documents, newspapers and magazines, and textbooks," Amazon said in a statement.Some 50 US and international magazines and newspapers -- desperate to stop the flow of red ink from a loss of advertising and readers to the Web -- have signed up to make their publications available on the new Kindle.