An electronic book (variously: e-book, eBook, e-Book, ebook, digital book, or even e-edition) is a book-length publication in digital form, consisting of text, images, or both, and produced on, published through, and readable on computers or other electronic devices like iPhone, iPad, Android phone, tablet. And what is a digital flip book?As the computer technology and information technology develop, more and more physical things are brought into the digital virtual world, and act as in the real world. And digital flip book is one of the examples, a page flipped ebook is designed to simulate the reading experience of paper book, allowing audience to turn the book pages with lifelike page turning effect and sound.