Missing manual for world's oldest surviving computer found

The long-lost manual for the Zuse Z4, the oldest surviving digital computer has been found.

The Z4 was the last computer the Nazis invented. Ahead of the Soviet invasion of Berlin, the Wehrmacht evacuated the machine west to Göttingen. It's inventor Konrad Zuse—inventor of the world's first programmable computer, the Z3—completed work on the Z4 in Göttingen but had to move the machine again ahead of the Allies.

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