Discovery of Two Historical Computers in Switzerland: Zuse Machine M9 and Contraves Cora and Discovery of Unknown Documents on the Early History of Computing at the ETH Archives

  • Herbert Bruderer
Conference paper
Part of the IFIP Advances in Information and Communication Technology book series (IFIPAICT, volume 416)


Since 2009 we have been trying to find out more about the beginnings of computer science in Switzerland and abroad. Most eyewitnesses have already died or are over 80 years old. In general, early analog and digital computers have been dismantled long ago. Subject to exceptions, the few remaining devices are no longer functioning. Many documents have gone lost. Therefore investigations are difficult and very time-consuming. However, we were able to discover several unknown historical computers and hundreds of exciting documents of the 1950s. In 2012, the results have been published in a first book; a second volume will be forthcoming next year.


Cora ERMETH ETH archives Hasler AG Heinz Rutishauser Konrad Zuse M9 (=Z9) Mithra AG Paillard SA Remington Rand AG Unesco Z4 


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    Protocols of the ETH council,
  2. 2.
    Bruderer, H.: Konrad Zuse und die Schweiz. Wer hat den Computer erfunden? (Konrad Zuse and Switzerland. Who invented the computer?), 250 pages. Oldenbourg-Wissenschaftsverlag, Munich (2012) (with eyewitness reports and a worldwide bibliography of over 500 publications)Google Scholar
  3. 3.
    Bruderer, H.: Wer hat den Computer erfunden? Frühgeschichte der Informatik: USA, England, Deutschland, Österreich, Schweiz. Mit mehreren Zeitzeugenberichten. Bibliografie zur Informatikgeschichte mit über 1200 Einträgen, Munich/Berlin (2014) (Who invented the computer? Early history of computing: USA, England, Germany, Austria, Switzerland. With several eyewitness reports. Bibliography on the history of computing with over 1200 publications)Google Scholar

Copyright information

© IFIP Federation for Information Processing 2013

Authors and Affiliations

  • Herbert Bruderer
    • 1
  1. 1.Swiss Federal Institute of TechnologyZurichSwitzerland

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