UMC (Uniwersalna Maszyna Cyfrowa - Polish for Universal Digital Machine) is a family of computers produced by Elwro from 1962. It consisted of vacuum-tube based UMC-1 and transistor-based UMC-10 (1964). UMC computers operated using negabinary (-2 base) numeral system invented by prof. Zdzisław Pawlak.[1]

UMC-1
UMC-10

References

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  1. ^ Jerzy, Szewczyk (1970-04-09). "The Universal UMC-10 Computer (Construction, Organization, Programming)". {{cite journal}}: Cite journal requires |journal= (help)[dead link]