Z3
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The Z3 is a German computer created by wikipedia:Konrad Zuse in 1941. Despite its extreme simplicity (the computer simulated only addition, subtraction, multiplication, division, and square-rooting), wikipedia:Raúl Rojas has successfully simulated a universal Turing machine using this computer by literally gluing the ends of the punched tape together so that a program can run in a single loop.[1] However, without this looped program contrivance, Rojas states "the Z3 is ... no universal computer in the sense of Turing".[2]
See also
References
- ↑ Rojas, R. (1997a). How to Make Zuse's Z3 a Universal Computer (from the Wayback Machine; retrieved on 1 August 2020)
- ↑ Rojas, R. (1997b). The Architecture of Konrad Zuse's Early Computing Machines