The Z22 was the seventh computer model Konrad Zuse developed. One of the early commercial computers, the Z22's design was finished about 1955. The major version jump from Z11 to Z22 was due to the use of vacuum tubes, as opposed to the electromechanical systems used in earlier models. The first machines built were shipped to Berlin and Aachen.
Z22, built 1956; now at ZKM in Karlsruhe
ZUSE Z22 vacuum tube
Programming the Z22
Konrad Ernst Otto Zuse was a German civil engineer, pioneering computer scientist, inventor and businessman. His greatest achievement was the world's first programmable computer; the functional program-controlled Turing-complete Z3 became operational in May 1941. Thanks to this machine and its predecessors, Zuse is regarded by some as the inventor and father of the modern computer.
Konrad Zuse in 1992
Zuse Z1 replica in the German Museum of Technology in Berlin
Plaque commemorating Zuse's work, attached to the ruin of Methfesselstraße 7, Berlin
Statue of Zuse in Bad Hersfeld