Sector may refer to:

in computing:

  • Cylinder-head-sector (or "CHS"), an early method for giving addresses to each physical block of data on a hard drive
  • Disk sector, a physical subdivision of space on a computer disk-storage medium, specifically a subdivision of a "track"
  • in portal rendering, a convex polygonal segment of map-space used to facilitate calculation of the visibility of objects in a computer display

geographic subdivisions generally referred to as "sectors":

fictional uses:

  • Sector (Star Trek), a fictional area of space-designation used in the Star Trek universe for interstellar navigation

See also

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