08-01-2013, 11:15 AM
A HISTORY OF THE COMPUTER
A HISTORY.ppt (Size: 439 KB / Downloads: 57)
PRE-HISTORY ERA4th century B.C. to 1930s
The abacus is believed to have been invented in 4th century B.C.
The Antikythera mechanism, a device used for registering and predicting the motion of the stars and planets, is dated to 1st century B.C.
Arabic numerals were introduced in Europe in the 8th and 9th century A.D. and was used until the 17th century.
ELECTRONICS ERA1900-1964
In 1926, Dr. Julius Edgar Lilienfield from New York filed for a patent on a transistor.
Konrad Zuse, a German engineer, completes the 1st general purpose programmable calculator in 1941.
Colossus, a British computer used for code-breaking, is operational by the end of 1943.
ENIAC (Electronic Numerical Integrator Analyzor and Computer) is developed by Ballistics Research Lab in Maryland and built by the University of Pennsylvania and completed in 1945.
MINI ERA(1959-1970)
The Mini Era began with the development of the integrated circuit in 1959 by Texas Instruments and Fairchild Semiconductor.
Ivan Sutherland demonstrates a program called Sketchpad (makes engineering drawings with a light pen) on a TX-2 mainframe at MIT’s Lincoln Labs in 1962.
By 1965, an integrated circuit that cost $1,000 in 1959 now costs less than $10.
MICRO ERA1971-1989
Bill Gates and Paul Allen form Traf-O-Data in 1971 to sell their computer traffic-analysis sytems.
Gary Kildall writes PL/M, the first high-level programming language for the Intel Microprocessor.
Steve Jobs and Steve Wozniak are building and selling “blue boxes” in Southern California in 1971.
Intel introduces the 8008, the first 8-bit microprocessor in April of 1972.