SD yog ib qho kev ua tau zoo tshaj plaws flash nco cov qauv hauv ntiaj teb kev ua lag luam niaj hnub no. Ib qho ntawm nws cov npe nrov yog SDHC. Raws li cov thev naus laus zis tsim nyog, lub ntiaj teb cov npe ua lag luam tsim cov ntawv cim xeeb txaus thiab txhim khu kev qha. Cov yam ntxwv ntawm tus qauv no yog dab tsi? Cov khoom siv SDHC tshwm sim li cas?
Specific SDHC cards
SDHC (lossis Secure Digital High Capacity) nco daim npav yog cov khoom siv ua haujlwm raws li tus qauv uas yog kev txhim kho ntxiv ntawm SD flash nco technologies tsim los ntawm SD Card Association. Qhov peculiarity ntawm cov khoom siv no yog tias lawv lub peev xwm tuaj yeem ncav cuag 32 GB. Cov ntaub ntawv feem ntau siv rau ntawm daim npav nco no yog FAT32.
Ib tus qauv nyob rau hauv uas SDHC nco daim npav tuaj yeem tsim tau yog micro. Tab sis qhov no, nrog rau cov cuab yeej, raws li txoj cai, koj yuav tsum siv SD adapter, uas koj tuaj yeem txuas rau PC lossis lwm yam khoom siv uas siv flash nco.
Nws feem ntau tuaj nrog cov qauv cim xeebmicro.
Compatibility
Thov nco ntsoov tias daim npav SDHC raws li daim npav nco yuav tsis sib xws nrog cov khoom siv uas yog tsim los ua haujlwm nrog SD phaib li niaj zaus. Qhov tseeb yog tias nws siv lub hauv paus ntsiab lus ntawm sector-by-sector addressing (raws li nyob rau hauv hard drives), tsis zoo li byte-by-byte chaw nyob, uas yog siv nyob rau hauv nco phaib ntawm yav dhau los tiam.
SD Card Txhim Kho Keeb Kwm
Ua ntej lub ntiaj teb IT engineers tsim SDHC-compatible memory card, qhov no tau ua ntej los ntawm kev ua haujlwm ntev thiab ua haujlwm ntawm kev lag luam cov hom lag luam ua qauv thiab txhim kho cov khoom siv flash siv rau cov ntaub ntawv khaws cia. Yog li, xyoo 1999, SanDisk, Toshiba, thiab Matsushita txiav txim siab los tsim tus qauv tshiab - SD, lossis Secure Digital. Dab tsi yog nws qhov tshwj xeeb?
Ua ntej ntawm tag nrho, hauv kev txhawb nqa ntawm DRM raws li cov txheej txheem SDMI. Raws li lub tswv yim tau hais los ntawm peb lub npe tau hais los saum toj no, SD daim npav cim xeeb yog los sib tw nrog Sony lub npe nrov Memory Stick thev naus laus zis hauv kev ua lag luam. Peb lub npe tsim ib lub koom haum tshiab hu ua SD Assiciation. Tom qab ntawd, nws cov qauv suav nrog cov npe loj tshaj plaws - xws li, piv txwv li, Intel, AMD, Samsung, Apple.
Nyob rau hauv lub moj khaum ntawm SD thev naus laus zis, 4 lub cim tseem ceeb ntawm daim npav flash tau raug tso tawm. Thawj zaug, uas ua haujlwm ntawm SD 1.0 thev naus laus zis, muaj peev xwm tso cov ntaub ntawv mus txog 2 GB, qhov thib ob, SD 1.1, ua haujlwm hauv cov ntaub ntawv loj txog li 4 GB. Tus nqi txwv ntawdcim xeeb daim npav SDHC - 32GB. Lub cim xeeb tom ntej ntawm flash - raws li tus qauv SDHX, tuaj yeem khaws cia txog 2 TB ntawm cov ntaub ntawv.
SD phaib thiab cov uas txhawb SDHC tus qauv yog siv ntau yam ntawm cov ntawv thov digital. Cov cuab yeej tsim nyog tuaj yeem siv los ua cov nqa khoom ntawm yuav luag txhua hom ntaub ntawv. Lawv tshwj xeeb tshaj yog tsim los ntawm kev siv cov khoom siv yees duab thiab video. SD daim npav muaj, txhim khu kev qha. Cov cuab yeej siv SDHC thev naus laus zis kuj tseem muaj peev xwm ua tau zoo.
daim npav SDHC tuaj txog li cas?
SDHC daim npav nco tau tshwm sim li cas ntawm IT khoom lag luam? Thawj cov khoom siv ua haujlwm hauv SD tus qauv, raws li peb tau sau tseg saum toj no, pib tsuas yog tso rau 2 GB ntawm cov ntaub ntawv hauv lawv tus kheej. Tau ntev, cov peev txheej no txaus los ua cov haujlwm yooj yim ntawm cov neeg siv - piv txwv li, tso cov ntaub ntawv, duab, cov ntaub ntawv suab paj nruag.
Maj mam, cov kev xav tau ntawm cov tswv computer tau nce ntxiv. Nyob rau hauv 2006, ib tug tshiab, ntau tshaj flash nco tus qauv tshwm sim - SDHC. Nyob rau tib lub xyoo, SD Associations kuj tau tsim ntau chav kawm ceev rau cov khoom siv cuam tshuam. Nyob rau hauv txhua tus ntawm lawv, qhov tsawg kawg nkaus ceev tus nqi (hauv MB / s) rau kev nyeem ntawv lossis sau cov ntaub ntawv raug kho.
SDHC daim npav nco, feem ntau, tiv nrog tus neeg siv cov dej num. Txawm li cas los xij, cov kev xav tau ntawm cov neeg nyiam siv hluav taws xob digital tau txuas ntxiv mus ntxiv. Qhov no yog li cas tus qauv SDXC tau tshwm sim, uas suav nrog kev tso cov ntaub ntawv mus txog 2 TB. Txawm li cas los xij, nws yuav tsum raug sau tseg tias cov cuab yeej zoo li no tau qhib muagtsawg thiab kim (nws feem ntau pheej yig dua los yuav ib lub hard drive sab nraud).
Cov ntaub ntawv kaw lus tau nruab rau ntawm daim npav SD tshiab kawg yog exFAT, uas tau dhau los ua kev txhim kho ntxiv ntawm FAT32. Ntawm cov txiaj ntsig tseem ceeb ntawm tus qauv tshiab uas tau hais los ntawm Microsoft yog qhov txo qis ntawm kev siv cov ntaub ntawv overwriting hauv ib ntu.
Yuav ua li cas xaiv SD daim npav zoo tshaj?
Qee zaum, tus neeg siv PC yuav ntsib cov lus nug txog dab tsi zoo dua los yuav - SDHC nco daim npav lossis, piv txwv li, cov khoom siv raws li tus qauv SDXC? Nws tag nrho nyob ntawm, ua ntej ntawm tag nrho cov, ntawm qhov yuav tsum tau muaj peev xwm ntawm lub cuab yeej. Lwm qhov kev ntsuas yog kev sib raug zoo ntawm lub khoos phis tawj lossis lwm yam khoom siv nrog cov qauv sib xws. Qhov tseeb yog tias cov khoom siv - koob yees duab, PCs, daim npav nyeem ntawv, ntawm cov qauv qub tsis tas yuav txhawb lub cim xeeb flash tso tawm siv cov thev naus laus zis tshiab. Nyob rau tib lub sijhawm, nws yog qhov tsim nyog tias kev txhawb nqa rau qee cov qauv yuav nyob ntawm tsis yog ntawm kev ua haujlwm kho vajtse ntawm lub cuab yeej xwb, tab sis kuj tseem nyob ntawm qhov version ntawm lub firmware siv rau ntawm nws. Nws yuav zoo yog tias qhov hloov tshiab software yooj yim yuav pab lub cuab yeej - piv txwv li, tib lub koob yees duab, kawm paub txog SDHC tshiab lossis txawm tias SDXC nco phaib.
