Z3
Konrad Zuse's computer
Z3 was the first working freely
programmable, fully automatic
machine, which are often used as criteria in defining a
computer. It was built with
relays, had a
clock frequency of 5.33
Hz and was completed in
1941.
The original Z3 was destroyed in 1944 during a bombardment. A fully functioning replica was built in the 1960s by the Zuse KG and is on permanent display in the Deutsches Museum. In 1998 it was proved to be Turing-complete.
See also: ENIAC, Mark II, Colossus
External link