SDHC Memory Cards: imbali wophuhliso neempawu zobugcisa

Phakathi imigangatho flash memory kakhulu ngempumelelo ezikhoyo kwiimalike yanamhlanje zehlabathi - SD. Enye yezinto uthandwayo kwiintlobo zayo - SDHC. Ngokusekelwe brand kwithekhinoloji ehamba ihlabathi echaphazelekayo avelisa ikhadi sufficiently comprehensive nethembekileyo memory. Ziintoni iimpawu ze-standard? Njengoko kukho izixhobo exhasa SDHC?

Okukodwa SDHC ikhadi

SDHC kwimemori khadi (okanye Digital High Capacity Secure) zizixhobo ukuba zisebenza umgangatho, eyaba phambili uphuhliso lobugcisa uhlobo flash memory SD, eyenziwe yi-SD Card Association. Le peculiarity zezi zixhobo - ukuba amandla lwabo kufikelela 32 GB. Inkqubo yefayile, apho amaninzi asetyenziswa kwi amakhadi ememori ezinjalo - FAT32.

Omnye wale migangatho apho ingaveliselwa SDHC imemori khadi - micro. Kodwa kulo mzekelo, kunye nesixhobo, njengoko umthetho, kuyimfuneko ukuba usebenzise SD-iadaptha, ekuthe uqhagamshelwano kwiPC okanye esinye isixhobo, sebenzisa flash memory.

Ngokuqhelekileyo oku kufika izikhwebu ne iimodyuli imemori ndandikwibanga micro.

ehambelanayo

Kufuneka kuqatshelwe ukuba imemori khadi standard SDHC elifanelekileyo ayihambelani ne idivaysi babedalelwe ukuba ukusebenza kunye eqhelekileyo SD-cards. Inyaniso yokuba ababandakanyekayo umgaqo kwicandelo-based dilesi (njenge nzima drives), njengoko kuchasene Byte ukuba iphunyeziwe sangaphambili khadi.

Imbali Uphuhliso SD-ikhadi

Phambi kokuba IT-iinjineli jikelele sele sivelisiwe apho exhasa SDHC umgangatho yememori khadi, ukuba lwandulelwe umsebenzi elide yenkqubo brand aphambili shishini ngokusesikweni kunye nokwandisa bhetyebhetye kwezixhobo flash esetyenziselwa ukugcina iifayili. Ngoko ke, ngo-1999, inkampani SanDisk, Toshiba, kunye Matsushita bakhethe ukuseka umgangatho omtsha - SD, okanye Secure Digital. Yintoni Okukodwa wayo?

Kuqala kwinto zonke, ekuxhaseni DMR ngokungqinelana nenkqubo ye SDMI. Ngokutsho ingqiqo ecetywayo yi brand zintathu zikhankanywe apha ngasentla, kwimemori khadi-format SD kwakufuneka akhuphisane emarikeni sele ezaziwayo-kakuhle iteknoloji Sony Memory Stick. Three uphawu wadala umbutho omtsha obizwa SD Assiciation. Kamva, xa isakhiwo yayo ibandakanya iintlobo ezinkulu - ezifana, ngokomzekelo, Intel, AMD, Samsung, Apple.

Njengenxalenye ubuchwepheshe SD sakhulula enkulu amakhadi isizukulwana flash 4. Ithekhnoloji yokuqala esebenzayo SD 1.0, uyakwazi ukubeka idatha ku umthamo ukuya ku-2 GB, okwesibini - SD 1.1, osebenza phantsi kwamagunya lwefayile ukuya ku 4GB. Mda, nto leyo luphawulwa imemori khadi SDHC - 32GB. Isizukulwana esilandelayo flash memory - zesezantsi SDHX, ingathatha ukuya terabytes 2 lwefayile.

Usebenzisa SD-amakhadi kunye nezo ezixhasa umgangatho SDHC kwiimeko ezininzi izicelo zobugcisa yedijithali. Soup afanelekileyo Ingabizwa njengoko abathwali phantse zonke iintlobo zeefayili. ukusebenza ezizodwa kule inkalo usebenzisa ukuba faneleki nezixhobo yevidiyo. SD-amakhadi ziyafumaneka, oluthembekileyo. Isuphu, ukusebenza kwiteknoloji SDHC - nawo iphawulwa umthamo endilisekileyo.

wenza amakhadi SDHC njani?

Indlela Kwathi ngomhla kwimarike SDHC imemori khadi IT-amayelenqe nje? Zizixhobo yokuqala usebenza umgangatho SD, njengoko sibonile ngentla apha, ekuqaleni ibekwe kukodwa kuphela ukuya ku-2 GB of data. Kangangexesha elide le resource ngokwaneleyo ukwenza imisebenzi umsebenzisi zesiseko - ezifana kokufaka amaxwebhu, iifoto, iifayile zakho umculo.

Ngokuthe ngcembe iimfuno zabamnini iikhompyutha landa. Ngowe-2006, enye entsha, umgangatho ongcono flash memory - SDHC. Kulo nyaka mnye inkampani SD Associations iye kwakhona lenze iqela leeklasi ngenxa izixhobo isantya ahambelanayo. Ngaphakathi kule esisigxina ixabiso elincinane ngesantya (e MB / s) ukulungiselela iifayile ukufunda okanye ukubhala.

SDHC memory amakhadi, ngokubanzi ukumelana imisebenzi umsebenzisi. Noko ke, iimfuno abathanda electronic digital yaya ikhula. Ngoko umgangatho apho SDXC, kubandakanya ukufakwa ukuya ku-2 TB lwefayile. Nangona, kufanele kuphawulwe kwimarike ezivulekileyo izixhobo ezifana zinqabile yaye zibiza imali eninzi (atshiphu, njengoko umgaqo, ukuthenga yangaphandle hard drive).

Inkqubo ifayile efakwe kwi ezintsha SD-amakhadi - exFAT, FAT32 waba uphuhliso olungaphezulu. Phakathi iingenelo ebonakalayo umgangatho entsha ecetywayo yi-Microsoft - ukwehliswa ngobunzulu okanye amandla ukubhalwa data kwicandelo elinye.

Indlela ukukhetha SD-ikhadi ngokupheleleyo?

Kwezinye iimeko, phambi kokuba abasebenzisi PC bekungangumba, kungcono ukuba athenge - SDHC Memory Card okanye, umzekelo, isixhobo kwi standard SDXC? Kuya becala umthamo isixhobo oyifunayo. Enye yokuhlola - computer ehambelanayo okanye kwenye idivaysi kwimigangatho efanelekileyo. Isibakala sokuba izixhobo - iikhamera, iikhompyutha, abafundi ikhadi, imodeli endala akusoloko ixhaswa flash memory, leyo wakhululwa ngomhla ubuchwepheshe entsha. Kwangaxeshanye, kuyaphawuleka ukuba inkxaso abo okanye ezinye Migangatho azixhomekekanga kuphela iimpawu iintsimbi devaysa, kodwa inguquko yakho firmware kuwo. Kusenokwenzeka ukuba uphuculo lwesoftwe elula kuya kunceda isixhobo - umzekelo, iseli enye, bafunda ukuqaphela ukuba SDHC okanye SDXC imemori khadi entsha.