UNITRA ELTRA
UNITRA ELTRA
Bydgoszcz, Poland

Eltra was a radio factory. Established in 1923, nationalized in 1945, they made first Polish consumer-grade transistor radio mini-receiver in 1959. Since 1970s till 1980s they were manufacturing the calculators BRDA.They started with calculators based on VFD Japanese tubes (K-741 and K-741M, difference is in keyboard layout) and Mostek chips, later using LED displays imported from western countries. They used western chips first, later using CEMI Polish circuits

Source : oldcomputer.info

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