EBook is the text and images on the basis of published in digital form, produced and published and read on computers or other digital devices. Oxford Dictionary of the English language known as e-book electronic copy of the printed book, but the e-book, and can not exist without the equivalent of print. E-books are read usually dedicated hardware known as e-readers and e-book devices. Can also be personal computers and some mobile phones can be used to read e-books. Overall, the written and the first e-books in the areas of specialization and a limited audience, which is intended to be read and small groups and interest only devoted. The availability of the Internet transmission of electronic files much easier, such as e-book.</span>