History of Computers and Computing, The birth of the electronic computer, Electronic computer
ABC (Atanasoff/Berry Computer), John Atanasoff and Clifford Berry, 1939
Colossus, Maxwell Newman and Thomas Flowers, 1943
ENIAC, John Mauchly and John Eckert, 1945
SSEM, Frederic Williams and Tom Kilburn, 1948
Ferranti Mark 1, 1951
Whirlwind, Jay Forrester, 1951
PDP-1, Ben Gurley, 1959
Atlas computer, 1959
SAGE, Jay Forrester, 1961
PDP-11, 1970
Cray, Seymour Cray, 1975