lesson 1 ppt - point to point communication media. They...

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RTV 3007 History
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Quick Facts n First radio broadcast: Reginald  Fessenden, Christmas Eve, 1906 n First radio network company: NBC, 1926 n First “Top 40” radio broadcasts: 1952
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Quick Facts n First public demonstration of TV: 1939  World’s Fair n Cost of first TV commercial: $4 (1941) n Cost of commercial minute in 2006 Super  Bowl: $ 5.0 million
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The Inventors n The key to telecommunications is    that electromagnetic energy can be    transmitted between two points.  n Early inventors and inventions paved the  way for the electronic mass media
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The Inventors n James Maxwell and Heinrich Hertz  demonstrated the existence of electromagnetic  radiation
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The Inventors n Samuel Morse invented the telegraph (1844)  n Morse Code Translator
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The Inventors n Alexander Graham Bell invented the telephone  (1878)
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The Inventors n Both the telegraph and telephone  businesses supported themselves   through commercial means n Both the telegraph and the telephone were 
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Unformatted text preview: point to point communication media. They sent a message from one source to a The Inventors 19th Century Wired Communication • Weaknesses of Wired Communication The Inventors 19th Century Wired Communication • Weaknesses of Wired Communication n Construction The Inventors 19th Century Wired Communication • Weaknesses of Wired Communication n Construction n Maintenance The Inventors n Guglielmo Marconi - Started experimenting with radio transmitters and receivers. Eventually he developed a The Inventors n Guglielmo Marconi obtains patent for his wireless telegraph (1896) The Inventors n Reginald Fessenden - tested his alternator on Christmas Eve, 1906, demonstrated that voice could be transmitted over the “ ether. ” • Fessenden ’ s alternator produced a continuous wave that was needed for the transmission of voice or...
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This note was uploaded on 02/15/2011 for the course RTV 3007 taught by Professor Staff during the Fall '08 term at University of Florida.

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lesson 1 ppt - point to point communication media. They...

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