EVOLUTION OF MODERN ELECTRONIC COMMUNICATION , Chronology of Electronic Communication

SbistudyNovember 14, 2019inDigital electronicsLeave a comment

HISTORICAL PERSPECTIVE THE EVOLUTION OF MODERN ELECTRONIC COMMUNICATION
The electronic communication has undergone through a chain of dramatic developments even since the first electronic communication invented by Morse in 1838. However, it may be noted that this development became possible due to the parallel development in the field of electronic devices, circuits etc. To provide historical perspective, the important developments in the field of electronic communication are listed ahead:
Table 1.2. A Chronology of Electronic Communication

Year

Development

1800-1837
1838
1845
1864
1876
1887
1904
1920
1923
1927
1931
1934
1936
1937
1938
1948
1950
1953
1956
1958
1960
1961
1962
1962-1966
1963
1964
1965
1966-1975
1979
1988

Preliminary developments
The invention of telegraphy
The Kirchhoff’s circuit laws enunciated
Maxwell’s equations predict electromagnetic radiation
The invention of telephony
The invention of wireless telegraphy
Communication Electronics
Transmission theory
Invention of television
Federal communications commission established
Teletypewriter service initiated
H.S. Black develops the negative-feedback amplifier
Armstrong’s paper states the case for FM radio
Pulse code modulation
Radar and microwave communication
Information theory and coding
Time-division multiplexing applied to telephony
Colour TV Standards established in United States
First transoceanic states telephone cable (36 voice channels)
Long-distance data transmission system developed for military purposes
Maiman demonstrated the first Laser
Integrated circuits go into commercial production
Satellite communication begins with Telestar I
High-speed digital communication
Solid-state microwave oscillators
Full electronic telephone switching system goes into service
Mariner 1V transmits pictures from Mars to earth
Wideband communication systems
Intercity optical links
Under sea fiber optical link

In the field of communication engineering, we need to analyze a given signal. To do so, we have to express the signal in its frequency domain. The translation of a signal from time domain to frequency domain is obtained by using the tools such as Fourier series and Fourier transform.