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14 Cards in this Set
- Front
- Back
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oriental abacus, used for numeric calculation
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600 BC
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Blaise pascal built mechanical adding device called "ARITHMETIC MACHINE", consisting of cogwheels in a box
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1642
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Von Liebnits used step-cylinders instead of cogwheels; his machine was able to perform addition, multiplication, and division; known as "CALCULATING MACHINE".
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1694
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Joseph Jacquard introduced punchdcards
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1801
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Charles Babbage presented outline for a machine that could calculate celestial tables used as navigation aid; Babbage was considered as originator of the modern computer.
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1822
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Charles Babbage presented "ANALYTIC MACHINE", design is closest to today's computers which has a store (memory) and a MILL (CPU)
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1834
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Herman Hollerith and james Powers developed punch card tabulating machine
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1880
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IBM was founded
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1924
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Mark I was developed, 1st general purposed modem computer; used ASCC (Automatic Seuence Controlled Calculator)
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1944
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ENIAC (Electronic NUmerical Integrator and Calculator); 1st general high speed electronic computer.
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1946
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UNIVAC (Universal Automatic Computer I), 1st commercially available computer
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1951
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EDVAC (Electronic Discrete Variable Automatic Computer), came with Stored Memory
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1952
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TRADIC (Transistor Digital Computer)
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1954
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Microchips developed, minicomputers introduced
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1973
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