* Photo Credits to: Computer History Museum and Wikipedia: IBM 360

1939 - Atanosoff Berry Computer - ABC

1941 - Konrad Zuse's Z3

1943 - Whirlwind at MIT

1944 - Colossus Mark II

1944 - Harvard Mark I

1946 - Argonne Version of the Institute's Digital Automatic Computer - AVIDAC

1946 - Electronic Numerical Integrator And Computer - ENIAC

1948 - IBM Selective Sequence Electronic Calculator - SSEC

1951 - Leo I

1951 - UNIVAC I

1951 - Whirlwind at MIT Complete

1952 - Grace Hopper with UNIVAC I

1956 - ElectroData 1

1956 - RAMAC (first moving-head magnetic hard disk)

1964 - IBM 360

1964 - IBM 360 Controller

1965 - UNIVAC

1965 - UNIVAC