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Sector
In the context of computer hardware, a sector is a sub-division of a track. A sector stores a fixed amount of data. The typical formatting of sectors allows holding 512 bytes of data.
In mathematics (geometry), a sector is part if a circle that is defined by angles.
See also: hard disk drive, hard disk drive partitioning, FAT
In economics, analysis can divide the totality of economic activity into sectors. See for example private sector, government sector[?].
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