Sumy vs Mbé

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Sumy (Ukrainian: Суми [ˈsumɪ] (listen)) is a city in north-eastern Ukraine, and the capital of Sumy Oblast (region). Sumy also serves as the administrative center of Sumy Raion of Sumy oblast.

Sumy is administratively incorporated as a city of oblast significance and does not belong to the raion. The population estimate is 264,981 (2020 est.)

Source: Wikipedia

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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