Traditional paper plate making is systematic, comprehensive, mature and reliable; The electronic document version, though short in publishing cycle and fast in information transmission, is incomplete in content, convenient to store, but unstable. Online books, the elements of books;

1, there must be knowledge information to spread-resource allocation.

2. It is inseparable from online media.

3. There should be text, image signals and their reaction "material carriers such as disks" to record knowledge.

4. The production technology and technology of online books are also the basic conditions for producing books.