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Zuse-23

 Manufacturer Zuse Identification,ID Zuse-23 Date of first manufacture 1961 Number produced 99 Estimated price or cost 200,000 (DM) in 1961. Exchange rate then was about \$1 = 4 (DM) location in museum - donor -

This Artifact
 Computer History Museum info Restoration of the Z-23

Interesting Web Sites
 The Z23 Computer The Life and Work of Konrad Zuse Zuse-Machines in the Museums Zuse-Appreciation, 457 K Bytes, .pdf Zuse, Z1 and Z3, 305 K Bytes, .pdf About the Z-23 and its arrival at CHM

Other information
  Message: 6 Date: Sat, 28 Aug 2010 10:17:46 +0200 From: Jochen Kunz Subject: Meet a Zuse Z23 To: cctalk@classiccmp.org Message-ID: <20100828101746.8fa9a330.jkunz@unixag-kl.fh-kl.de> Content-Type: text/plain; charset=US-ASCII Hi. This week I had the pleasure to visit a Zuse Z23 on display in my city. The Z23 is a first generation, discrete transistor and diode logic, drum based machine with a small "cache" of core memory. It is hosted at the Fraunhofer Institute for Experimental Software Engineering. Here is the Press release regarding the Zuse machine: http://www.iese.fraunhofer.de/de/presse/current_releases/PM-2010-16-210610z23.jsp Ohh, if you can't read german (at all we are talking about a german computer ;-) ) here is the english version: http://www.iese.fraunhofer.de/press/current_releases/PM-2010-16-210610z23.jsp I took some pictures: http://www.unixag-kl.fh-kl.de/~jkunz/bilder/Zuse_Z23/ The machine is in very good, but not working condition. I suspect it would be a huge task to make it operable again, like the PDP-1 restoration. But it could be done. There is a complete set of documentation, schematics, some spare parts, ... A former user of that machine from the local university explained the machine and its inner workings in detail to us. In one word: Fascinating! :-) BTW: There is a tube based Zuse Z22 in working condition on display in the ZKM museum in Karlsruhe (Germany). The Z23 is kind of a transistor reimplementation of the Z22: http://www.zkm.de/algorithmische-revolution/index.php?module=pagemaster&PAGE_user_op=view_page&PAGE_id=118 Pictures only in the german version: http://www.zkm.de/algorithmische-revolution/index.php?module=pagemaster&PAGE_user_op=view_page&PAGE_id=131 -- \end{Jochen} 

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Updated June 20, 2014