Mbé vs Pskov

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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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Pskov (Russian: Псков, IPA: [pskof] (listen); see also names in other languages) is a city in northwestern Russia and the administrative center of Pskov Oblast, located about 20 kilometers (12 mi) east from the Estonian border, on the Velikaya River. Population: 203,279 (2010 Census); 202,780 (2002 Census); 203,789 (1989 Census).

Pskov is one of the oldest cities in Russia. It served as the capital of the Pskov Republic and was a trading post of the Hanseatic League. Later it came under the control of the Grand Duchy of Moscow and the subsequent Russian Empire.

Source: Wikipedia