The first scheduled telecast took place April 30, 1939, and featured Franklin D Roosevelt speaking at the just-opened New York World's Fair. Only a single television station existed at the time, and it reached about 150 television sets in the New York City area.
The broadcast was to be the beginning of regular telecasting, and more than a thousand sets were sold in the following weeks. However, within months of that first broadcast, war began all over the world. All further development of television stopped almost immediately. Television broadcasting did not resume until seven years later, with its explosive growth dating from l946.
Television programs are migrating from their traditional form of delivery to transmission over the Internet for computers, tablets and smartphones. A growing number of people are choosing to watch shows on these devices rather than on television sets.
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