Information systems - Used punched cards as the main...

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Introduction to Information Systems A short history of computing Hardware history overview 1943: Harvard Mk I’ and colossus in UK Colossus : electronic computer to crack the german coding system – lorenz’ cipher The Harvard Mk I’ : a more general purpose electro mechanical programmable computer built at Harvard university with backing from IBM. The first of the first generator computers Based around wired circuits containing vacuum valves
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Unformatted text preview: Used punched cards as the main (non-volatile) storage 1946: ENIAC electronically numerical integrator and computer Weighed 30 tons Contained 18 000 electronic valves Consumed around 25KW electrical power 1947 : the invention of the transistor Replaced the inefficient valves, smaller and more reliable Enabled the second generation computers wich dominated the late 1950 RAM : Random access memory...
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This note was uploaded on 05/11/2011 for the course ECON 201 taught by Professor Briquet during the Spring '11 term at Ipag Business School .

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