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Abacus
1300 BC
Astrolabe
220 - 150 BC
Da Vinci's Calculator
1502
Slide Rule
17th Century
Napier's Bones
1617
Blaise Pascal
1623 - 1662
Pascal's Arithmetic Machine
1642
Gottfried Wilhelm
1646 - 1716
Step Reckoner
1694
Charles Babbage
1791 - 1871
Jacquard's Loom
1804
George Boole
1815 - 1864
Lady Ada Lovelace
1815 - 1852
Difference Machine
1820s-30s
Herman Hollerith
1860 - 1929
Analytical Engine
1871
Hollerith Machine
1890
John V. Atanasoff
1903 - 1995
John Von Neumann
1903 - 1957
Grace Hopper
1906 - 1992
J. Presper Eckert/John W. Mauchly
1919 - 1995
Alan Turing
1912 - 1954
Jack Kilby
1923 - 2005
Niklaus Wirth
1934 -
Turing Machine
1936
ABC
1939
Zuse Z3
1941
Colossus MK II
1943 - 1945
EDVAC
1944
Harvard Mark I
1944
ENIAC
1945
EDSAC
1947
Baby
1948
BINAC
1949s
Bjarne Stoustrup
1950 -
Mainframe Computer
1950s
UNIVAC
1951
Bill Gates
1955 -
Steve Jobs
1955 - 2011
FORTRAN
1956
COBOL
1959
Integrated Circuit
1959
Mini Computer
1960s
Transistor
1962
BASIC
1964
PASCAL
1970
Intel 4004
1971
Microprocessor
1971
UNIX
1971
C
1972
Smalltalk
1972
Altair Computer
1974
CP/M
1974
Cray Supercomputer
1975
Apple II
1977
IBM PC
1981
Xerox Star
1981
Apple Macintosh
1985
C++
1985
NeXT
1985
Linux
1991