Mbé vs Plzeň

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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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Plzeň (Czech pronunciation: [ˈpl̩zɛɲ] (listen); German and English: Pilsen, ) is a city in the Czech Republic. About 90 kilometres (56 miles) west of Prague in western Bohemia, it is the fourth most populous city in the Czech Republic with about 175,000 inhabitants.

The city is known worldwide for Pilsner beer, created by Bavarian brewer Josef Groll here in 1842.

Source: Wikipedia