The common e-book formats of mobile terminals are UMD, JAR and TXT, among which TXT format is the most common.
Txt is a text format attached to Microsoft operating system, and it is the most common file format. It has been widely used as early as DOS era, mainly storing text information, that is, text information. At present, most operating systems use programs such as Notepad, and most software can be viewed, such as Notepad, browser and so on.