Similar to the synapse, the intercellular phenomenon of chemical and electrical stimulus to the brain, nowadays, the television, as an extension of the nervous system, has been keeping the mankind in a perenial psycological and emotional contact, by transforming the modern world in a kind of global village.
Since the first iconoscopes up to the video home system and recently the DVD, its technological evolution was fast, and consequently dominating as a fantastic mass communication mean.
(a) One of the earliest television home receivers in 1928. It consisted of a compact Jenkins drum-type scanner with magnifying glass and a radio receiver.

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(b) Dr. C. Francis Jenkins in 1928 at the telecaster of his station in the USA. Radio News.

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