An e-book (short for electronic book and also known as a digital book, ebook, and eBook) is “a portable electronic device used to download and read books or magazines that are in digital form.”[1] Sometimes the equivalent of a conventional printed book, e-books can also be born digital. The Oxford Dictionary of English defines the e-book as "an electronic version of a printed book,"[2] but e-books can and do exist without any print equivalent. E-books are usually read on dedicated hardware devices known as e-Readers or e-book devices. Personal computers and some cell phones can also be used to read e-books.