A brief history of electronics

A Brief History of Electronics
Electronics is the branch of physics, engineering and technology dealing with electrical circuits that involve active electrical components such as vacuum tubes,transistors, diodes and integrated circuits, and associated passive interconnection technologies. This was an historical division used early in the twentieth century to separate the already flourishingfield of electrical engineering from the new and emerging field of electronic engineering. Electrical engineers perform diverse functions as design, development, production, and research with variedapplications. They deal with the systems by which we can communicate with one another world-wide, by which vast quantities of data are manipulated.
The origins of electrical engineering are based on theachievements of such scientific giants as Ampere, Coulomb, Maxwell, and Ohm. The first practical uses of their work were in the development of communications systems. In the 30’s, Samuel Morse,demonstrated the telegraph system. In the 70’s Bell invented the telephone and introduced a method for coding information as a continuous electrical signal and then decoding these signals at a receiver.Thomas Edison’s invention of the phonograph in ’77 demonstrated that electrical signals could be stored and subsequently recovered. The phonograph record can be considered the first electrical Read OnlyMemory. Maxwell, in 1865 codified earlier researches into a consistent theory of electromagnetism, now referred to as Maxwell’s equations; also he’s prediction of the existence of electromagneticwaves which could be propagated in space. Marconi was the first to exploit the use of hertzian waves, succeeding in transmitting these waves and detecting the 2 miles away.
A device is controllingelectric current through a vacuum in a sealed container. The container is often thin transparent glass in a roughly cylindrical shape. The simplest vacuum tube, the diode, is essentially an incandescent...