The word number comes from the synthesis of numbers and electronic words. Refers to the integration of digital technology and electronic technology, which is used to represent, transmit, store and process information. Digital technology converts information into discrete digital form, which is processed and transmitted by electronic equipment. Digital devices include computers, smart phones, digital cameras and digital music players. The characteristics of digital technology include high precision, high speed, high capacity and easy replication. Digital technology is widely used, covering communication, entertainment, medical care, industry, transportation and other fields. The development of digital technology has promoted the rapid development of the information society and changed people's way of life and work. The popularity of digital products and services makes it easier for people to obtain and enjoy information, and improves the efficiency of information processing and transmission. Generally speaking, digital technology is the product of the combination of digital technology and electronic technology, which brings a new era of digitalization and intelligence.