An interesting read on the subject, very detailed and it goes as far as the first letters and the beginning of writing: The Information by James Gleick. [1] In

An interesting read on the subject, very detailed and it goes as far as the first letters and the beginning of writing: The Information by James Gleick. [1] In a chapter, he explains how the transmission of messages worked with towers, the limitation they had, the different things they tried. For instance, he explains how they used a cross with moving branch and each position of the branches would mean a letter, but also how it was difficult to implement and how it eventually evolved. [1] http://en.wikipedia.org/wiki/The_Information:_A_History,_a_Theory,_a_Flood http://en.wikipedia.org/wiki/The_Information:_A_History,_a_T...