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Ríomhairí, Ríomheolaíocht An t-aonad is lú is féidir a rochtain ar dhiosca. Nuair a dhéantar diosca a fhormáidiú, roinntear i rianta agus i dteascóga é. Is ciorcail chomhlárnacha ar an diosca iad na rianta agus is deighleáin taobh istigh de gach ciorcal iad na teascóga.
Computers, Computer Science The smallest unit that can be accessed on a disk. When a disk undergoes a low-level format, it is divided into tracks and sectors. The tracks are concentric circles around the disk and the sectors are segments within each circle.
Bíonn méid gach teascóige i gcomhréir le méid na huillinne gafa inti.
The size of each sector is in proportion to the size of the angle at the centre of the sector.