Odra was a line of computer

Computer

A computer is a programmable machine designed to sequentially and automatically carry out a sequence of arithmetic or logical operations. The particular sequence of operations can be changed readily, allowing the computer to solve more than one kind of problem...

s manufactured in Wrocław, Poland

Poland

Poland , officially the Republic of Poland , is a country in Central Europe bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus and Lithuania to the east; and the Baltic Sea and Kaliningrad Oblast, a Russian exclave, to the north...

.

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

ICT 1900 series

ICT 1900 was the name given to a series of mainframe computers released by International Computers and Tabulators and later International Computers Limited during the 1960s and '70s...

 and 1906 due to software agreement. 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

Elwro

Elwro – was a Polish company that produced the Odra and ELWAT computers and two ZX Spectrum clones. The Elwro factory was sold to Siemens in 1993 and shut down shortly afterwards....

 manufacturing plant, which was closed in 1989.

ODRA-1002 were capable of only 100-400 operations per second.

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.

An ODRA 1204 computer was used by a team in Leningrad

Leningrad

Leningrad is the former name of Saint Petersburg, Russia.Leningrad may also refer to:- Places :* Leningrad Oblast, a federal subject of Russia, around Saint Petersburg* Leningrad, Tajikistan, capital of Muminobod district in Khatlon Province...

 developing an ALGOL 68

ALGOL 68

ALGOL 68 isan imperative computerprogramming language that was conceived as a successor to theALGOL 60 programming language, designed with the goal of a...

 compiler in 1976. The ODRA 1204 ran the syntax analysis, code generation ran on an IBM

IBM

International Business Machines Corporation or IBM is an American multinational technology and consulting corporation headquartered in Armonk, New York, United States. IBM manufactures and sells computer hardware and software, and it offers infrastructure, hosting and consulting services in areas...

 System/360

System/360

The IBM System/360 was a mainframe computer system family first announced by IBM on April 7, 1964, and sold between 1964 and 1978. It was the first family of computers designed to cover the complete range of applications, from small to large, both commercial and scientific...

http://www.computer-museum.ru/english/algol68.htm

Up until 30 April 2010 there was still one ODRA 1305 working at the railway station in Wrocław Brochów. The system was shut down at 22:00 CEST 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

Tamara passive sensor

Tamara was the third generation Czechoslovak electronic support measures system that used measurements of time difference of arrival of pulses at three or four sites to accurately detect and track airborne emitters by multilateration. Tamara's serial numbers were KRTP-86 and KRTP-91 and it...

 run by Rodan 10 (military version of Odra). It is hard to ascertain whether it is true due to military secrecies of all countries involved: Poland

Poland

Poland , officially the Republic of Poland , is a country in Central Europe bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus and Lithuania to the east; and the Baltic Sea and Kaliningrad Oblast, a Russian exclave, to the north...

, Czechoslovakia

Czechoslovakia

Czechoslovakia or Czecho-Slovakia was a sovereign state in Central Europe which existed from October 1918, when it declared its independence from the Austro-Hungarian Empire, until 1992...

 (where the system is still developed with the current version called VERA

VERA passive sensor

VERA -VERA passive radiolocator is an electronic support measures system that uses measurements of time difference of arrival of pulses at three or four sites to accurately detect and track airborne emitters....

), Federal Republic of Yugoslavia.

Literature

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