Mbé vs Kerch

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In computer science, group coded recording or group code recording (GCR) refers to several distinct but related encoding methods for representing data on magnetic media. The first, used in 6250 bpi magnetic tape since 1973, is an error-correcting code combined with a run-length limited (RLL) encoding scheme, belonging into the group of modulation codes.

The others are different mainframe hard disk as well as floppy disk encoding methods used in some microcomputers until the late 1980s. GCR is a modified form of a NRZI code, but necessarily with a higher transition density.

Source: Wikipedia

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Kerch (Ukrainian: Керч; Russian: Керчь, pronounced [ˈkʲertɕ]; Old East Slavic: Кърчевъ, Ancient Greek: Παντικάπαιον, Pantikápaion, Medieval Greek: Βόσπορος Bosporos; Crimean Tatar: Keriç, Керич; Turkish: Kerç) is a city of regional significance on the Kerch Peninsula in the east of the Crimea. Population: 147,033 (2014 Census).

Founded 2,600 years ago as an ancient Greek colony, Kerch is considered to be one of the most ancient cities in Crimea. The city experienced rapid growth starting in the 1920s and was the site of a major battle during World War II. Today, it is one of the largest cities in Crimea and is among the republic's most important industrial, transport and tourist centres.

Source: Wikipedia