Digital textbooks have been very popular recently. What is it?

Digital textbooks correspond to traditional paper textbooks.

Digital teaching materials, comprehensive use of multimedia technology, digital processing and digital presentation of traditional paper teaching materials.

For example, the same words, traditional paper textbooks can only print words and pictures on paper. After being converted into digital teaching materials, you can not only see words and pictures, but also be assisted by audio and video, and even interact, which is very vivid and can greatly improve learners' learning experience.