Imemori ye-RAM engavamile (Imemori Yokufinyelela Okungakahleliwe) evame ukusetshenziswa emakhompyutheni ayihambisani. Lokhu kusho ukuthi uma uvala ikhompiyutha, lonke ulwazi olugcinwe kwimemori yezinkumbulo lulahlekile. Ngokuphambene nalokhu, inkumbulo ye-flash ayiyona into ephikisayo okusho ukuthi ulwazi olulondolozwe kulolu hlobo lobuchwepheshe bememori lugcinwa lapho amandla enqunywe. Ulwazi olubhalwa futhi lwasuswa kulezi zikhumbuzo ze-memps ekhethekile lwenziwa nge-elekthronikhi kunendlela eyenziwe ngendlela engokwemishini - efana ne-EEPROM endala futhi ehamba kancane kakhulu (ubuchwepheshe obungasakwazi ukuhleleka okufundwayo okufundwayo kuphela). Leli fomu lobuchwepheshe bezwe obuqinile lihlukile ekugcinweni kwemishini njengamashayela asebenzayo ajwayelekile; ulwazi kulokhu lugcinwa usebenzisa i-magnetism. Uhlobo oluvame kakhulu lwenkumbulo ye-flash esebenzayo namuhla yi-NAND - leli gama lithathwe esangweni lombono we-NAND ehlakaniphile ngoba imemori ye-flash isebenzisa isango elijikelezayo le-MOSFET transistors elungiselelwe ngendlela efanayo.
Isebenza kanjani?
Njengoba kuchazwe ngaphambilini, imemori ye-flash isebenzisa isithangamu sezintambo ezijikelezayo. Lezi zihlelwe egridi. Esikhundleni se-transistor evamile esesinye isango, ukukhanya kwe-NAND inkumbulo inezingango ezimbili. Ukuba namasango amabili kwenza kube lula 'ukugcina' umshini phakathi kwamasango amabili ukuze ungagudluli - lokhu kubaluleke kakhulu futhi kwenza noma yiluphi ulwazi olugcinwe okungezona oluthintekayo. Eqinisweni, lokhu 'okuphethwe' ngombane (okumelela ulwazi) kulesi chip kungahlala esimweni esivinjelwe iminyaka eminingi - noma uze usule imemori. Ukwaziswa okugcinwe kukhishwa ngokukhipha amandla okuphuma emkhatsini wamasango amabili ngokusebenzisa isici esikhethekile sesango elingaphambukayo elingafani nobuchwepheshe bokukhumbula imemori.
Amadivaysi e-Electronic ajwayelekile asekelwe e-Flash
Kukhona amadivaysi amaningi kagesi abasebenzisi abasebenzisa imemori ye-NAND njengokugcina. Ezinye izixazululo zesitoreji zangaphandle nazo zisebenzisa i-NAND flash memory. Izinhlobo ze-hardware ongase uzihlangabezane nazo ezisebenzisa lolu hlobo lobuchwepheshe zifaka:
- Abadlali be-MP3
- Ama-Portable Media Players ( PMP s)
- Amakhadi e-Flash / izinkumbulo ezifana ne-MicroSD ne-MicroSDHC
- Amashayela we-USB Flash
- Smartphones / Amakholi
- Amanye amadivayisi we-multimedia
Izinzuzo Nokungalungi
Njengazo zonke ubuchwepheshe, kunezinzuzo nezingozi zokuzisebenzisa. Enye yezinzuzo ezicacile zokusebenzisa inkumbulo esekelwe flash (namadivayisi ayisebenzisayo) ukuthi ayikho izingxenye zemishini ezingakwazi ukuguga noma ukulimala kalula. Kulabo abadlali be-MP3 namanye amadivayisi angadlala umculo we-digital, lokhu kuyisimo sokugcina esiphezulu esingasondelene nokushaqeka okuphazamisayo, ukuphazamiseka kwamandla kagesi, njll. Imemori ye-Flash nayo ishibhile futhi ingaba isinqumo esihle sokugcina - kokubili abakhiqizi amadivayisi we-hardware nabathengi abafisa ukuthenga isitoreji esengeziwe ngendlela yememori amakhadi futhi.
Noma kunjalo, inkumbulo ye-flash inezinkinga zayo. Okokuqala, kunomphefumulo ophelile ngesikhathi sokuthi idatha ingabhalwa endaweni efanayo yememori. Lokhu kuyaziwa ngokuthi imijikelezo ye-P / E (uhlelo-ukunciphisa imijikelezo) futhi ngokuvamile inamaphesenti angaba ngu-100,000 afunda / abhala. Emva kwalokhu, isitoreji se-flash sizokwehla ngokuthembeka njengoba inkumbulo ye-NAND ihlehla. Lokhu kugqoka inkumbulo kungakhishwa kuma-MP3 abadlali namanye amadivaysi aphathekayo usebenzisa i-firmware esakazeka le mijikelezo yokufunda / ebhala ngokukhipha ngokwengeziwe ukwenza idivayisi idlule iminyaka eminingi ngaphansi kokusetshenziswa okujwayelekile. Enye ingcindezi yokugubha imemori akusho ukuthi ayifani nesikhundla se-TB (iTerabyte) esizibonayo kumishini yokusebenza kanzima ngakho-ke lobu buchwepheshe abukwazi ukusetshenziselwa (okwamanje) ngokugcina isitoreji esikhulu.