Digital typography is the evolving form of verbal communication in smart societies. This type of communication originates from the new communication needs in twentieth century media. In this article, which is aimed at understanding the principles of digital typography, the first question is how different types of typography were formed in the transition from the printing age to the digital era. For this purpose, at the beginning, the ideological dimension of the transformation of printed typography into dynamic typography is evaluated. Then, by analyzing how digital typography is formed and transformed in digital media, it was revealed that following The crystal Goblet visual poetry and the perception of the same observation, in a clear, expressive and interactive typography, respectively, which formed the role of the reader, and then from reader to viewer and finally leads to the user. The second question is about the origin of different types of verbal communication, within these three types of typographies and the role of that origin, in the development of specialized principles of digital typography. Thus, based on documentary research method, various forms of verbal communication in print, dynamic and digital media are analyzed from the perspective of McClellan and Manovich; and finally, the four principles of usability, meta-textual, limitation and interactionism are explained and presented in a graphic diagram based on Joyce's studies and also considering the origin of media and their determining role in shaping the principles of digital typography. In short, digital typography is the result of the idea of receiving the same observation, which, according to McClellan's theory, extends a new artificial organ of the human body. This type of typography is understood by the right hemisphere of the brain, and since the role of the audience in relation to this typography changes from viewer and listener to user, it is an interactive art that with the help of these four features, a kind of multifaceted verbal communication and simultaneously creates; verbal communication that in the past was limited to visual and auditory communication through speech and writing.