UMC (computer)
{{Short description|Elwro computer family}}
{{More citations needed|date=February 2009}}
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.{{Cite journal|last=Jerzy|first=Szewczyk|date=1970-04-09|title=The Universal UMC-10 Computer (Construction, Organization, Programming)|url=http://www.dtic.mil/docs/citations/AD0869038|language=en}}{{dead link|date=June 2022|bot=medic}}{{cbignore|bot=medic}}