The Romanian computers (HC 85, HC 85+, HC 88, HC 90, HC 91 and HC 2000) were clones of the ZX Spectrum produced at ICE Felix from 1985 to 1994. HC 85 was first designed at Institutul Politehnic București by Prof. Dr. Ing. Adrian Petrescu (in laboratory), then redesigned at ICE Felix (in order to be produced at industrial scale). Their operating system was a BASIC interpreter.
