Television

摘要

The first commercial television broadcast in America happened exactly where and when it should have-at the 1939 World's Fair in New York. That fair has been called the beginning of the future-it featured freeways, computers, robots and an opening speech by President Franklin D. Roosevelt that was televised to the few hundred television sets in the New York area at the time. A decade later there were 7 million sets in the United States.