History of Computer's processor

Year	Event
1823	Baron Jons Jackob Berzelius silicon (Si), which today is the basic component of processors.
1903	Nikola Tesla patents electrical logic circuits called "gates" or "switches".
1947	John Bardeen, Walter Brattain, and William Shockley invent the first transistor at the Bell Laboratories on December 23, 1947.
1948	John Bardeen, Walter Brattain, and William Shockley patent the first transistor.
1956	John Bardeen, Walter Brattain, and William Shockley are awarded the Nobel Prize in physics for their work on the transistor.
1958	The first integrated circuit is first developed by Robert Noyceof Fairchild Semiconductor and Jack Kilby of Texas Instruments. The first IC was demonstrated on September 12, 1958.

UNIVAC the first computer!!!

History of computing hardware

History of Computers

The history of automatic data processing begins with Charles Babbage’s attempt to build an automatic mechanical calculator at Cambridge, England, in 1830. In 1930’s punched cards were in wide use in large businesses. In 1937 Howard Aiken, at Harwad, proposed IBM that a machine could be constructed to automatically sequence the operations and calculations performed. This machine used combination of electromechanical devices, including relays (mercury delay lines)

First Generation Computers

Ø  UNIVAC (Universal Automatic Computer) marks the beginning of the first generation of electrical computers.

ß(UNIVAC)

Ø  1^st generation computers employed vacuum tubes.

Ø  The input & output were punched card reader and the card punches.

Ø  IBM-650 was the most popular 1^st generation computer and was introduced in 1950 with magnetic drum memory punched cards for input & output.

ß(IBM-650)

Ø  It was intended for both business & scientific applications.

Second Generation computers

Ø  These computers employed germanium transistors & other solid state devices.

Ø  Their circuits were smaller than the vacuum tubes, & generated less heat.

Ø  2^nd generation computers required less power, were faster and more reliable.

Ø  IBM 1401 was the most popular second generation computer.

ß(IBM 1401)

Ø  They employed magnetic tape as input/output media.