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In mathematics ( geometry), a sector is the "pie shaped" area of part of a circle enclosed by two radii and an arc.
In the context of computer hardware, a sector is a sub-division of a track of a magnetic hard disk or optical disc. A sector stores a fixed amount of data. The typical formatting of sectors allows holding 512 bytes of data.
See also: hard disk drive, hard disk drive partitioning, FAT
Sector can also be used metaphorically, referring to a generic piece or portion of something.
For example, in economics, analysis can divide the totality of economic activity into sectors. See for example private sector, public sector, service sector. A traditional breakdown identifies:
- the primary sectorThe primary sector of industry generally involves the conversion of natural resources into primary products. Most products from this sector are considered commodities or raw materials for other industries. Major businesses in this sector include agricultu
- the secondary sectorThe secondary sector of industry is the manufacturing sector of industry. This sector of industry generally takes the output of the primary sector and manufactures finished goods or products to a point where they are suitable for use by other businesses,
- the tertiary sectorThe tertiary sector of industry also called the service sector or the service industry is one of the three main industrial categories of a developed economy, the others being manufacturing and primary goods production such as mining and agriculture. The t
