[SIGCIS-Members] Discovery of the user manual of the world's oldest surviving (digital) computer

herbert.bruderer at bluewin.ch herbert.bruderer at bluewin.ch
Mon Sep 21 11:36:05 PDT 2020

Dear all,
Konrad Zuses's Z4 relay machine (1945) is the world's oldest preserved computer. It was used by the ETH Zurich from 1950 to 1955 and is now located in the Deutsches Museum, Munich.
The user manual was lost for a long time, it now came to light:
For more details see:
Herbert Bruderer: Milestones in Analog and Digital Computing, Springer Nature Switzerland
AG, Cham, 3rd edition 2020, 2 volumes, 2050 pages, 715 illustrations,
151 tables, 
Best wishes,
Herbert Bruderer
Bruderer Informatik
Seehaldenstrasse 26
Postfach 47
CH-9401 Rorschach
Telefon +41 71 855 77 11
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