IT History

Information about IT History

Published on December 13, 2009

Author: bonique

Source: authorstream.com

Content

Group 1 : Jeffrey S. Tan Roniel D. Resurreccion Edward C. Satrain Group 1 12/13/2009 1 Introduction to Information Technology : Introduction to Information Technology 12/13/2009 2 Information Technology : Information Technology 12/13/2009 3 The term I.T. refers to the integration of computing technology and information processing. The Evolution of Information Technology : The Evolution of Information Technology 12/13/2009 4 4 Basic Periods of Information Technology 1.The Premechanical Age 2. The Mechanical Age 3. The Electromechanical Age 4. The Electronic Age Slide 5: 12/13/2009 5 The Premechanical Age (3000B.C. – 1450A.D.) The Premechanical Age (3000B.C. – 1450A.D.) : The Premechanical Age (3000B.C. – 1450A.D.) 12/13/2009 6 First humans communicated only through speaking and picture drawings Sumerians made Cuneiform The first numbering systems similar to those in use today were invented between 100 and 200 A.D. by Hindus in India who created a nine-digit numbering system. The First Calculator : The First Calculator 12/13/2009 7 The Abacus Slide 8: 12/13/2009 8 Your Text Here The Mechanical Age: 1450 - 1840 The Mechanical Age: 1450 - 1840 : The Mechanical Age: 1450 - 1840 12/13/2009 9 Pascal began work on his calculator in 1642. He had been assisting his father, who worked as a tax commissioner He made Pascaline Pascaline could only add and subtract Blaise Pascal (left) and his Pascaline (right) Charles Babbage’s Difference Engine and Analytical Engine that used to punched cards : Charles Babbage’s Difference Engine and Analytical Engine that used to punched cards 12/13/2009 10 Difference Engine Analytical Engine Early Punch cards Slide 11: Lady Augusta Ada Byron - recognize as the “first programmer” - she foresaw the capability of computers to go beyond mere calculating or number-crunching while others, including Babbage, focused only on calculating. 12/13/2009 11 Slide 12: 12/13/2009 12 The Electromechanical Age: 1840 - 1940 The Electromechanical Age: 1840 - 1940 : The Electromechanical Age: 1840 - 1940 12/13/2009 13 Voltaic Battery by Allesandro Volta Morse Code by Samuel Morse The Telegraph Joseph Marie Jacquard's loom : Joseph Marie Jacquard's loom 12/13/2009 14 The Jacquard loom was the first machine to use “Punch cards” to control a sequence of operations It is where Babbage picked the idea of “punch cards” Alexander Graham Bell – the inventor of telephone : Alexander Graham Bell – the inventor of telephone 12/13/2009 15 Bell speaking into prototype model of the telephone Herman Hollerith : Herman Hollerith built machines under contract for the Census Office developed a mechanical “tabulator” based on punched cards in order to rapidly tabulate statistics from millions of pieces of data Founder of Tabulating Machine Company 12/13/2009 16 Hollerith and his Tabulating machine Slide 17: In 1911, four corporations, including Hollerith's firm, merged to form the Computing Tabulating Recording Corp. (CTR). Under the presidency of Thomas J. Watson, it was renamed International Business Machines Corp. (IBM) in 1924 12/13/2009 17 Punch card workers IBM’s first logo Howard Aiken : Howard Aiken 12/13/2009 18 A Ph.D. student at Harvard University Built the Mark I He completed Mark I in 1942 Mark I is 8 feet tall, 51 feet long, 2 feet thick, weighed 5 tons, used about 750,000 parts Slide 19: 12/13/2009 19 The Electronic Age: 1940 - Present The Electronic Age: 1940 - Present : The Electronic Age: 1940 - Present Electronic Numerical Integrator and Computer (ENIAC) Used vacuum tubes (not mechanical devices) to do its calculations. Hence, first electronic computer. Developers John Mauchly, a physicist, and J. Prosper Eckert, an electrical engineer The Moore School of Electrical Engineering at the University of Pennsylvania Funded by the U.S. Army. But it could not store its programs (its set of instructions) It was made in1946 12/13/2009 20 The ENIAC Team : The ENIAC Team 12/13/2009 21 Left to right: J. Presper Eckert, Jr.; John Grist Brainerd; Sam Feltman; Herman H. Goldstine; John W. Mauchly; Harold Pender; Major General G. L. Barnes; Colonel Paul N. Gillon Computer Generations : Computer Generations 12/13/2009 22 Slide 23: End. 12/13/2009 23

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