What we usually refer to as "digital" refers to digital products that contain "digital technology", such as digital cameras, digital camcorders, digital learning devices, digital portable speakers, and so on. With the development of technology, the emergence and development of computers have driven a batch of products marked with numbers, replacing traditional films, videotapes, audio tapes, etc. We collectively refer to these products as digital products. For example, television/communication equipment/mobile or portable electronic tools have all adopted digitization to a considerable extent.