Imemori ye-RAM yesiqhelo (Imemori yokufikelela kwiRhafu engaqhelekanga) esetyenziswa rhoqo kwiikhompyutheni iyahluleka. Oku kuthetha ukuba xa ucima ikhomputha, yonke inkcazelo egcinwe kwimpumpi yeememori ilahlekile. Ngokuphambene nale nto, imemori yefowuni ayikho into enokuzenzekelayo eyenza ukuba ulwazi olugcinwe kulolu hlobo lwekhnoloji yeememori lugcinwa xa kugqitywa amandla. Iinkcukacha ezibhaliweyo kwaye zisusiwe kule miqulu yeememori ezikhethekileyo zenziwa ngekhompyutheni kunokuba zenzeke ngendlela engumatshini - ezifana ne-EEPROM edala kunye ne-EEPROM enokuphucula. Le fom yezobuchwepheshe bezobuchwepheshe belizwe ihluke kwi-mechanical storage such as drives hard drive ; ulwazi kule nkcazo ligcinwa ngokusebenzisa i-magnetism. Uhlobo oluqhelekileyo lwememori yefowuni esetyenziswayo namhlanje yi-NAND - eli gama lithathwa kwisango elisekhompyutheni ye-NAND yomqhubi ngoba imemori yefowuni isebenzisa isango elijikelezayo le-MOSFET transistors elungiselelwe ngendlela efanayo.
Ingaba isebenza kanjani?
Njengoko kuchaziwe ngaphambili, imemori yefowuni isebenzisa abajikelezi bezicwangciso ezijikelezayo. Ezi zihlelwe kwigridi. Esikhundleni sendlela yokuguqulela esesinye isango, imemori ye-NAND ifowuni inamasango amabini. Ukuba namasango amabini kwenza kube lula 'ukugcina' umbane phakathi kwamasango amabini ukwenzela ukuba ungagcini - oku kubaluleke kakhulu kwaye yenza nayiphi na ingcaciso egciniweyo engagxiliyo. Enyanisweni, lo mzila 'ogqitywe' (omelela ulwazi) kwi-chip unokuhlala kwindawo ekhethiweyo iminyaka emininzi - okanye ude ususe imemori. Ulwazi olugcinwe lucinywa ngokucima i-voltage kude phakathi kwamasango amabini ngokusebenzisa isakhiwo esikhethekileyo esangweni esesigxina esicacile kwi-teknoloji yememori.
Iimpawu eziqhelekileyo ezixhomekeke kwi-Electronic Devices
Kukho ezininzi izixhobo zombane zesebenzisa i-NAND flash memory njengendawo yokugcina. Ezinye izisombululo zokugcina zangaphandle nazo zisebenzisa i-Memory NAND flash. Iindidi ze-hardware enokuthi ufikelele kuzo ezisebenzisa olu hlobo lwetheknoloji ziquka:
- Abadlali be-MP3
- I-Portable Media Players ( PMP s)
- Amakhadi amatshini / imemori njenge MicroSD kunye ne-MicroSDHC
- I-USB Flash drive
- Smartphones / iifowuni
- Ezinye iiltimedia
Inzuzo kunye neNzuzo
Njengazo zonke i-teknoloji, kukho ubuchule kunye nokuqhafaza kokuyisebenzisa. Enye yeenzuzo ezicacileyo zokusebenzisa imemori esekelwe kwi-flash (kunye nezixhobo ezisebenzisayo) kukuba akukho zixhobo ezingasetyenziswayo okanye ezinokulimala. Kwiimidlalo ze-MP3 kunye nezinye izixhobo ezinokudlala umculo wedijithali, oku kusemgangathweni wokugcina okhuselekileyo okhuselekayo ngokukhawuleza, ukuchithwa komonakalo emangalisa, njl. Imemori ye-Flash iyinto ephantsi kwaye ingaba yinto efanelekileyo yokugcina-kubini abenzi Iifowuni zeehadi kunye nabathengi abanqwenela ukuthenga isitoreji esongezelelweyo ngendlela yememori khadi.
Nangona kunjalo, imemori yefowuni ineentsilelo zayo. Okokuqala, inexesha elide lokuphila kwimizuzu yezihlandlo ukuba idatha ingabhalwa kwindawo efanayo yememori. Oku kwaziwa ngokuba yi-P / E (i-program-easy-cycles cycles) kwaye ikwazi ukuba i-100,000 ifunde / ibhale. Emva koko, ukugcinwa kwefowuni kuya kuncipha ngokuthembeka njengoko inkumbulo yeNAND ihla. Ingubo yokugqoka inokukhutshwa ngaphandle kweetlayiti ze-MP3 kunye nezinye iifowuni eziphathekayo usebenzisa i-firmware eyenza le mijikelezo yokufunda / ibhala ngokukodwa ukwenza ukuba idilesi idlule iminyaka emininzi isebenzisekile. Omnye umgca wokutsala imemori ingagqibekanga kwi-TB (iTerabyte) amandla esiwabona kumatshini asebenzayo kanzima kwaye ngoko le teknoloji ayinakusetyenziswa (okwamanje) yokugcina ubuninzi kwizinga elikhulu.