Page 18 - Collections of the TU Dresden [Office for Academic Heritage]

C O L L E C T I O N S O F T H E FA C U LT Y O F M AT H E M AT I C S

C O L L E C T I O N O F H I S T O R I C A L C A L C U L AT I O N M A C H I N E S
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The collection consists of 145 objects and provides an overview of the development of mechani-
cal calculation machines in the period between 1885 and 1960. The mechanical and electro-
mechanical calculation machines, which were predominantly produced in Glashütte (Saxony),
document the history of economy and science in Saxony. The collection is supplemented by
models that demonstrate working principles. A second part of the collection contains the
digital calculators D1, D2 and D4a as well as corresponding equipment and peripheral devices
that were developed by N.J. Lehmann at TH Dresden beginning in 1950.

Institute of Scientific Computing
Willers-Bau · Zellescher Weg 12–14
Prof. Dr. Manfred Ludwig · Phone: +49 351–463 327 96 · E-Mail: Manfred.Ludwig@tu-dresden.de
http://www.math.tu-dresden.de/Hist_Rechenmaschinen/index.html

S E C T I O N A L M O D E L O F F O U R - S P E C I E S P I N W H E E L M A C H I N E , C A . 1 9 6 0 ( F I G . P . 1 6 )
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S M A L L D 4 A C O M P U T E R B Y N . J . L E H M A N N , T U D R E S D E N 1 9 6 3

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