Odra (computer)

Odra No. 1305, 1974

Odra was a line of computers manufactured in Wrocław, Poland.

The production started in 1959–1960. Models 1001, 1002, 1003, 1013, 1103, 1204 were of original Polish construction. Models 1304 and 1305 were functional counterparts of ICL 1905 and 1906 due to software agreement.^[1] The last model was 1325 based on two models from ICL.

The name comes from the Odra River that flows through the city of Wrocław

The computers were built at the Elwro manufacturing plant, which was closed in 1989.

ODRA-1002 were capable of only 100-400 operations per second.^[2]

The operating system used by the ODRA-1204 is called SODA. It was designed to work on a small computer without magnetic storage and can run simultaneous loading and execution of programs.^[3]

An ODRA 1204 computer was used by a team in Leningrad developing an ALGOL 68 compiler in 1976. The ODRA 1204 ran the syntax analysis, code generation ran on an IBM System/360[1]

Up until 30 April 2010 there was still one ODRA 1305 working at the railway station in Wrocław Brochów.^[4] The system was shut down at 22:00 CEST^[5] and replaced with a contemporary computer system. Few Odras are placed on exhibition in museums and at least one is still operational and maintained by students of electrical school which created a fan club around the machine.

There are several speculations alleging that the only one downed F-117 was tracked down using Czechoslovakian passive radiolocation system Tamara run by Rodan 10 (military version of Odra).^[6][7] It is hard to ascertain whether it is true due to military secrecies of all countries involved: Poland, Czechoslovakia (where the system is still developed with the current version called VERA), Federal Republic of Yugoslavia.

Literature

• Bronisław Obirek "Maszyny analityczne organizacja zmechanizowanego obrachunku" Wydawnictwo Naukowo Techniczne, Warszawa 1970 r.

See also

• History of computer hardware in communist countries

References

1. ^ http://itpedia.pl/index.php/ODRA_1305
2. ^ http://www.warmus.com.pl/pdf/tytul_ang.pdf
3. ^ http://comjnl.oxfordjournals.org/cgi/content/abstract/11/2/148
4. ^ Jacek Bomersbach (25 April 2008). "Zabytkowa Odra pracuje na stacji kolejowej" (in pl). Archived from the original on 30 May 2008. http://web.archive.org/web/20080530115600/http://www.wfp.pl/wroclaw-miasto/news.php?id=10004. Retrieved 26 April 2008. 
5. ^ "Wyłączono ostatni komputer Odra w Polsce!". http://www.computerworld.pl/news/358487/Wylaczono.ostatni.komputer.Odra.w.Polsce.html. 
6. ^ http://www.newsweek.pl/artykuly/sekcje/nauka/odra-1305--cud-techniki-po-polsku-,59316,1, pol.
7. ^ http://www.elwrowcy.republika.pl/final.pdf, pol.