intro to electronic communications
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Intro to Electronic CommunicationsTRANSCRIPT
MICHAEL ERNIE F. RODRIGUEZ November 19, 2015ECE 41: Principles of Communications
Assignment:
HISTORY OF ELECTRONIC COMMUNICATION
1837 – Samuel MorseInvention of the telegraph (patented in 1844).
1843 – Alexander BainInvention of facsimile.
1866 – United States and EnglandThe first trans-Atlantic telegraph cable laid.
1876 – Alexander BellInvention of the telephone.
1877 – Thomas EdisonInvention of phonograph.
1879 – George EastmanInvention of photography.
1887 – Heinrich Hertz (German)Discovery of radio waves.
1886 – Guglielmo Marconi (Italian)Demonstration of “wireless” communication by radio waves.
1901 – Marconi (Italian)First trans-Atlantic radio contact made.
1903 – John FlemingInvention of the two-electrode vacuum tube rectifier.
1906 – Reginald FessendenInvention of amplitude modulation; first electronic voice communication demonstrated.
1906 – Lee de ForestInvention of triode vacuum tube.
1914 – Hiram P. MaximFounding of American Radio Relay League, the first amateur radio organization.
1920 – KDKA PittsburghFirst radio broadcast.
1923 – Vladimir ZworykinInvention and demonstration of television.
1933-1939 – Edwin ArmstrongInvention of the super heterodyne receiver and frequency modulation.
1939 – United StatesFirst use of two-way radio (walkie-talkies).
1940-1945 – Britain, United StatesInvention and perfection of radar (World War II).
1948 – John von Neumann and othersCreation of the first stored program electronic digital computer.
1948 – Bell LaboratoriesInvention of transistor.
1953 – RCA/NBCFirst color TV broadcast.
1958-1959 – Jack Kilby (Texas Instruments) and Robert Noyce (Fairchild)Invention of integrated circuits.
1958-1962 – United StatesFirst communication satellite tested.
1961 – United StatesCitizens band radio first used
1975 – United StatesFirst personal computers.
1977 – United StatesFirst use of fiber-optic cable.
1983 – United StatesCellular telephone networks.
1990s – United StatesAdoption and growth of computer networking, including local-area networks (LANs). Global
Positioning System (GPS) for satellite navigation. The Internet and World Wide Web.
2000-present – WorldwideThird-generation digital cell phones, wireless local-area networks, digital broadcast radio, and
40-Gbps fiber-optic communication.
ELECTROMAGNETIC SPECTRUM