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

 

History of Communication system

In the communication fields, the history starts with the   Samuel Morse’s telegraph communication. It gave the revaluation in the communication field.  He transmitted  the “What hath God wrought,”  word in electric telegraph between Washington, D.C., and Baltimore, Maryland, in 1844, a completely revolutionary means of real-time, long-distance communications was triggered. It was formulated by manual form in variable length code. Specifically, the Morse code is a variable-length code using an alphabet of four symbols: a dot, a dash, a letter space, and a word space; short sequences represent frequent letters, whereas long sequences represent infrequent letters.

more about  click the below link 

Communication System - Introduction- look at communication in history