E-books refer to publications that digitize information such as words, pictures, sounds and images, and handheld readers that integrate storage and display terminals with embedded or downloaded information such as words, pictures, sounds and images.

Digital publications that represent people's reading are different from traditional publications based on paper. E-books are recorded in digital form in devices with optical, electrical and magnetic media, and must be read, copied and transmitted by means of devices.

Statistics show that China has become the second largest e-book market in the world. In 2009, the shipment of e-book readers in China reached 3.92 million units, accounting for more than 20% of the global total in the first half of 20 10, second only to the United States, and it is expected to reach 100000 units in the whole year.

Correlation classification

E-books generally have two meanings, one is e-books, and the other is hand-held readers specialized in reading e-books. The main formats of e-books are PDF, EXE, CHM, UMD, PDG, JAR, PDB, TXT, BRM, etc. Many modern and popular mobile devices have the function of e-books. The mobile terminal can support the reading format of e-books. Common e-book formats are UMD, JAR and TXT.

E-books that have entered the fourth generation, from a technical point of view, are based on the cloud and can quickly connect users and products anytime and anywhere without downloading. Based on H5, it is superior to Flash, and can fully support interactive experiences such as graphics, video, audio, LBS, telephone, 3D, gravity sensing, intelligent data analysis and identification, and make the user experience more extreme.