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What is version 2.0?

Version 2.0 means: an upgraded version of the original.

Version originally refers to various books formed by copying, carving or other means. With the development of the times, versions are also applied to movies, television, software and other things, describing two things with the same object but different introduction methods.

The version number is the identification number of the version. Every operating system (or broadly speaking, every software) has a version number. The version number enables users to know whether the operating system used is the latest version and the functions and facilities it provides. Each version number can be divided into major version number and minor version number. For example: DOS4.0, the major version number is 4, and the minor version number is 0.