The horse used to have five toes.
The Z3 was an electromechanical computer designed by Konrad Zuse .. electromechanical. electromechanical. computer. computer. Konrad Zuse. Konrad Zuse. It was the world 's first working programmable , fully automatic digital computer .. computer. computer. programmable. Computer programming. The Z3 was built with 2,000 relays , implementing a 22-bit word length that operated at a clock frequency of about 5 -- 10 Hz .. bit. bit. word. Word ( data type ). clock frequency. clock frequency. Hertz. Program code and constant data were stored on punched film .. film. celluloid. The Z3 was completed in Berlin in 1941 .. Berlin. Berlin. The German Aircraft Research Institute used it to perform statistical analyses of wing flutter .. German Aircraft Research Institute. German Aerospace Center. wing flutter. wing flutter. Zuse asked the German government for funding to replace the relays with fully electronic switches , but funding was denied during World War II since such development was deemed `` not war-important '' .. World War II. World War II. The original Z3 was destroyed in 1943 during an Allied bombardment of Berlin .. Berlin. Berlin. Allied bombardment of Berlin. Bombing of Berlin during World War II. The Z3 was originally called V3 -LRB- Versuchsmodell 3 or Experimental Model 3 -RRB- but was renamed to not be confused with Germany 's V-weapons .. V-weapons. V-weapons. A fully functioning replica was built in the 1960s by Zuse 's company , Zuse KG , and is on permanent display at Deutsches Museum in Munich .. Kommanditgesellschaft. Deutsches Museum. Deutsches Museum. Munich. Munich. The Z3 was demonstrated in 1998 to be , in principle , Turing-complete .. Turing-complete. Turing-complete. However , because it lacked conditional branching , the Z3 only meets this definition by speculatively computing all possible outcomes of a calculation .. Thanks to this machine and its predecessors , Konrad Zuse is often regarded as the inventor of the computer .. computer. computer. Konrad Zuse. Konrad Zuse