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14 Cards in this Set

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