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Pre-WWII work and the Z1 Born in Berlin, Germany, Zuse graduated in civil engineering from the Technische Hochschule Berlin-Charlottenburg (today the Technische Universität Berlin or Technical University of Berlin) in 1935.
Working in his parents' apartment in 1938, his first attempt, called the Z1, was a binary Electrically driven mechanical calculator with limited programmability, reading instructions from punched tape.
The Z1 and its original blueprints were destroyed during World War II.