Mbé vs Frías

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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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This is a list of bus rapid transit (BRT) systems which are in operation or under construction. The term "BRT" has been applied to a wide range of bus services.

In 2012, the Institute for Transportation and Development Policy (ITDP) published a BRT Standard to make it easier to standardize and compare bus services.

Source: Wikipedia