timeline of calculating machines

-3,000 – abacus

1614 – logarithms – by John Napier

1622 – slide rule invented by Oughtred

1623 – calculating clock by Schickard could add and subtract up to six places

1642 – Pascal built an “arithmetical machine” which used wheels linked by teeth, capable of automatic carrying to the next place

1668 – Morland built the “money adder”, a mechanical calculating device that could add and subtract

1694 – Leibniz finished a machine that used cylinders and gears turned by a handle capable of multiplication and division

1820 – patent issued for “Arithmometer” to Charles Xavier Thomas de Colmar

1837 – Babbage publishes a paper describing his “difference engine”, a design for a programmable calculator

1933 – Mallock machine could solve simultaneous differential equations using an electrical analog process

1936 – An analog integrator that used water was build by Vladimir Lukyanov

1938 – Z-1, first freely programmable computer build by Konrad Zuse

1943 – Colossus began work at Bletchley Park on the Enigma project

1946 – ENIAC became operational

1948 – Selective Sequence Electronic Calculator (SSEC) built by IBM

1948 – Manchester Baby ran the first stored program

1958 – integrated circuit invented by Jack Kilby

SEE ALSO:
timeline of artificial intelligence

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