Intro to Electronic Communications

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