ECC

ECC (anglicky Error Correction Code, česky Kód opravující chyby) je technologie umožňující zjistit a opravit chybu. Používá se u dražších počítačů, zejména serverů.

Se vzrůstající kapacitou operační paměti počítačů roste statisticky i riziko takových chyb, kdy dojde náhodně ke změně bitu z 1 na 0 nebo naopak.[1] Taková změna v instrukci programu může mít samozřejmě dalekosáhlé následky. Aby se podobné riziko snížilo na minimum, používá se dnes u počítačů paměť typu ECC, díky níž lze chyby zjistit a opravit. Je to umožněno použitím několika bitů v každém slově navíc.[1]

Technologie ECC se zabývá chybovými daty a jejich opravnými kódy, kontrolováním integrity dat v SD a DDR-RAM a vyšších modulů, tedy u DDR2, DDR3, DDR4, GDDR3, GDDR4 a GDDR5.

Odkazy

Reference

  1. ↑ a b www.vahal.cz. www.vahal.cz [online]. [cit. 2011-01-11]. Dostupné v archivu pořízeném dne 2009-07-04. 

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