Odra (computer)

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Odra was a family of mainframe computers built in Wrocław, Poland, by the Elwro factory. The name comes from the Odra river that flows through the city. Production began in 1959. Early models (1001–1204) were Polish designs. Models 1304 and 1305 were ICL-compatible clones due to a software agreement, and the last model, 1325, was based on ICL designs. The Elwro plant closed in 1993. The Odra 1002 could perform 100–400 operations per second. In 1962, Witold Podgórski built the Marienbad game on a prototype Odra 1003; it’s considered one of the first Polish computer games. The Odra 1204 ran the SODA operating system, designed to work without magnetic storage and to load and run programs at the same time. In 1976, an Odra 1204 helped in Leningrad develop an ALGOL 68 compiler (its analysis ran on the Odra, with code generation on IBM System/360). By 2010 there was still one Odra 1305 at Wrocław’s Brochów station, but it was shut down. In 2017 the Museum in Katowice began a project to recommission an Odra 1305.