What is Soviet integrated circuit designation?

Soviet integrated circuit designation is an industrial specification for encoding of names of integrated circuits manufactured in the Soviet Union and Post-Soviet Union countries. 25 years after the dissolution of the Soviet Union, a number of manufacturers in Russia, Belarus, Ukraine, Latvia, and Uzbekistan still use this designation.

The designation uses the Cyrillic alphabet which sometimes leads to confusion where a Cyrillic letter has the same appearance as a Latin letter but is romanized as a different letter. Furthermore, for some Cyrillic letters the Romanization is ambiguous.