History of Communication
The beginning of communication was based on transportation. Such as the roman network of roads, European Navies, and The U.S and Canadian Transconticnental railroads
Communication through electronics began in 1844 with the telegraph and in 1876, The telephone began to replace the telegraph.
In 1889 Radio waves were transmitted and in 1906 amplifying vacuum tube led to commercial radio which began in 1920 with Pittsburgh's KDKA. Television came to england in 1925 with one of the first scheduled TV shows.
In the 50s and 60s Television began appearing in homes everywhere. Marshall McLuhan posed the notion of a "global village." The global village refers to the "shrinking of the world society because of the ability to communicate." People around the world could now have a common referance point.
Today portable communication devices allow people to communicate over the entire world quite easily.
Two Models of Telecommunications: Tree & Branch versus Switched Network
