only a few letters are ambiguous: Ж: Ž, Zh Х: X, H, Ch, Kh Ц: C, Cz, Ts, Tc Ч: Č, Ch The more-common romanizations in bold are given as alternatives in the above tables. Е and Э are both romanized as E. The French romanization of Russian and the German romanization of Russian differ in some letters from the one used in English. For instance, the Russian КР580ВМ80A becomes KR580VM80A in English and French but KR580WM80A in German literature. See also 7400 series: Second sources in Europe and the Eastern Bloc Commons:Gallery of Soviet integrated circuits List of 7400-series integrated circuits List of Soviet microprocessors Pro Electron: Integrated circuits Russian tube designations References Computing in the Soviet Union Electronics lists