Friday, August 21, 2020

History of communication

Year

Inventor

Type of communication/Contribution

1844

Samuel Morse

Telegraph

1864

James Clerk

Electromagnetic wave

1867

Hertz

Experimental verification of EM

1894

Oliver Lodge

Demonstrated wireless communication in short distance

1901

Guglielmo Marcon

Long distance radio communication

1918

Edwin H. Armstrong

Super heterodyne receiver

1933

Edwin H. Armstrong

frequency modulation

1857

Alexander Graham Bell

Telephone

1904

John Ambrose Fleming

vacuum-tube diode

1948

Walter H. Brattain, John Bardeen, and William Shockley

Transistor

1928

Philo T. Farnsworth

Television

1939

the British Broadcasting Corporation (BBC)

broadcasting television on a commercial basis

1928

Harry Nyquist

Nyquiast cretriea for faith signal transmission

1937

Alex Reeves

pulse-code modulation

1948

Claude Shannon

A Mathematical Theory of Communication

1955

John R. Pierce

satellites for communications

1966

K. C. Kao and G. A. Hockham

Optical Communication

 

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