Txhua yam koj yuav tsum paub txog SD daim npav nco yog li koj tsis txhob xauv koj qhov kev yuav khoom

2024 Tus sau: Malcolm Clapton | [email protected]. Kawg hloov kho: 2023-12-17 03:58

Yog tias koj xav tias thaum yuav daim npav nco rau koj lub gadgets koj tsuas yog yuav tsum tau saib cov hom ntawv txhawb nqa thiab qhov loj me, koj yuav tsum chim siab. Muaj tsawg kawg yog tsib lub ntsiab lus tseem ceeb uas yuav tsum nco ntsoov.

1. Kev sib haum xeeb

Rau ntau tus neeg, microSD tsuas yog ib qho qauv, tab sis nws tsis yog tiag tiag. Koj tuaj yeem yooj yim ntxig txhua daim npav microSD rau hauv qhov txheej txheem, tab sis tsis yog txhua tus ntawm lawv yuav ua haujlwm, txij li daim npav txawv ntau txoj hauv kev.

Hom ntawv

Muaj peb hom SD sib txawv nyob rau hauv tag nrho, muaj nyob rau hauv ob daim ntawv yam (SD thiab microSD):

• SD (microSD) - tsav mus txog 2 GB, ua haujlwm nrog txhua yam khoom siv;
• SDHC (microSDHC) - tsav los ntawm 2 txog 32 GB, ua haujlwm ntawm cov khoom siv nrog kev txhawb nqa rau SDHC thiab SDXC;
• SDXC (microSDXC) - tsav los ntawm 32 GB txog 2 TB (tam sim no 512 GB siab tshaj), tsuas yog ua haujlwm ntawm cov khoom siv nrog SDXC txhawb nqa.

Raws li koj tau pom, lawv tsis rov qab sib xws. Cov ntawv cim xeeb tshiab yuav tsis ua haujlwm ntawm cov khoom qub qub.

Ntim

Cov chaw tsim khoom tau tshaj tawm kev txhawb nqa rau microSDXC tsis txhais hais tias kev txhawb nqa rau daim npav ntawm hom ntawv no nrog rau qhov loj me thiab nyob ntawm cov cuab yeej tshwj xeeb. Piv txwv li, HTC One M9 ua haujlwm nrog microSDXC, tab sis tsuas yog txhawb nqa daim npav mus txog thiab suav nrog 128GB.

Ib qho tseem ceeb ntxiv yog txuas nrog lub ntim ntawm cov khoom siv cia. Txhua daim npav microSDXC siv cov ntaub ntawv exFAT los ntawm lub neej ntawd. Windows tau txhawb nqa nws ntau dua 10 xyoo, hauv OS X nws tau tshwm sim txij li version 10.6.5 (Snow Leopard), hauv Linux faib exFAT kev txhawb nqa yog siv, tab sis nws tsis ua haujlwm tawm ntawm lub thawv txhua qhov chaw.

Kev kub ceev UHS interface

SDHC thiab SDXC phaib tuaj yeem txhawb nqa Ultra High Speed, uas, thaum txhawb kev kho vajtse ntawm lub cuab yeej, muab kev nrawm dua (UHS-I txog 104 MB / s thiab UHS-II txog 312 MB / s). UHS rov qab sib xws nrog cov kev sib tshuam ua ntej thiab tuaj yeem ua haujlwm nrog cov khoom siv uas tsis txhawb nqa, tab sis ntawm tus qauv nrawm (txog 25 MB / s).

2. Ceev

Kev faib cov ntawv sau thiab nyeem nrawm ntawm daim npav microSD yog qhov nyuaj raws li lawv cov qauv thiab kev sib raug zoo. Cov specs tso cai plaub txoj hauv kev los piav txog daim npav ceev, thiab txij li cov tuam txhab siv tag nrho lawv, muaj ntau qhov tsis meej pem.

Chav kawm ceev

Cov chav kawm ceev yog txuam nrog qhov tsawg kawg nkaus sau nrawm rau daim npav nco hauv megabytes ib ob. Muaj plaub ntawm lawv:

• Chav kawm 2 - los ntawm 2 MB / s;
• Chav Kawm 4 - los ntawm 4 MB / s;
• Chav Kawm 6 - los ntawm 6 MB / s;
• Chav Kawm 10 - los ntawm 10 MB / s.

Cov npav ua haujlwm ntawm UHS tsheb npav ceev tsuas muaj ob chav kawm ceev kom deb li deb:

• Chav Kawm 1 (U1) - los ntawm 10 MB / s;
• Chav Kawm 3 (U3) - los ntawm 30 MB / s.

Txij li thaum lub npe ntawm chav kawm ceev siv qhov tsawg kawg nkaus cov ntaub ntawv tus nqi, theoretically ib daim npav thib ob yuav zoo dua li daim npav thib plaub. Txawm li cas los xij, yog tias qhov no yog qhov teeb meem, cov chaw tsim khoom yuav nyiam tshaj tawm qhov tseeb qhov tseeb dua.

Qhov ceev tshaj plaws

Cov chav kawm ceev yog qhov txaus txaus rau kev sib piv daim npav thaum xaiv, tab sis qee cov tuam ntxhab, ntxiv rau nws, siv qhov siab tshaj plaws hauv MB / s hauv cov lus piav qhia, thiab ntau zaus tsis txawm tias qhov kev sau nrawm (uas ib txwm qis dua), tab sis nyeem ceev.

Cov no feem ntau yog cov txiaj ntsig kev sim hluavtaws nyob rau hauv cov xwm txheej zoo tagnrho uas tsis tuaj yeem ua tiav nrog kev siv ib txwm. Hauv kev xyaum, qhov ceev yog nyob ntawm ntau yam, yog li koj yuav tsum tsis txhob tsom rau tus yam ntxwv no.

Ceev multiplier

Lwm qhov kev xaiv ntawm kev faib tawm yog qhov sib npaug ntawm qhov nrawm, zoo ib yam li qhov siv los qhia qhov kev nyeem ntawv thiab sau nrawm ntawm optical discs. Muaj ntau tshaj kaum ntawm lawv, ntawm 6x rau 633x.

1x multiplier yog 150 KB / s, uas yog, qhov ceev ntawm qhov yooj yim 6x phaib yog 900 KB / s. Daim npav ceev tshaj plaws tuaj yeem muaj qhov sib npaug ntawm 633x, uas yog 95 MB / s.

3. Cov hauj lwm

Xaiv daim npav zoo raws li cov haujlwm tshwj xeeb. Qhov loj tshaj thiab ceev tshaj plaws tsis yog ib txwm zoo tshaj plaws. Rau qee qhov kev siv scenarios, ntim thiab ceev yuav overkill.

Thaum muas ib daim npav rau lub xov tooj smartphone, ntim ua lub luag haujlwm ntau dua li kev ceev. Qhov zoo ntawm cov cuab yeej cia loj yog qhov pom tseeb, tab sis qhov zoo ntawm kev hloov pauv siab ceev ntawm lub xov tooj smartphone yuav luag tsis xav, vim tias cov ntaub ntawv loj tsis tshua sau thiab nyeem muaj (tshwj tsis yog koj muaj lub xov tooj smartphone nrog 4K video txhawb).

Cov koob yees duab uas tua HD thiab 4K video yog ib qho teeb meem sib txawv: ceev thiab ntim yog qhov tseem ceeb ntawm no. Rau 4K yees duab, lub koob yees duab manufacturers pom zoo kom siv UHS U3 phaib, rau HD - ib txwm Class 10 los yog tsawg kawg yog Class 6.

Rau cov duab, ntau tus kws tshaj lij nyiam siv ob peb daim npav me me txhawm rau txo qhov kev pheej hmoo ntawm kev poob tag nrho cov duab thaum muaj zog majeure. Raws li rau qhov ceev, nws tag nrho yog nyob ntawm daim duab hom. Yog tias koj tua hauv RAW, nws ua rau kev txiav txim siab los nqis peev hauv microSDHC lossis microSDXC chav kawm UHS U1 thiab U3 - qhov no, lawv yuav qhia lawv tus kheej tag nrho.

4. Cov khoom cuav

Txawm hais tias nws yuav zoo li cas los xij, kev yuav khoom cuav raws li kev kos duab ntawm daim npav qub yog tam sim no yooj yim dua puas tau. Ntau xyoo dhau los, SanDisk tau thov tias ib feem peb ntawm SanDisk nco phaib ntawm kev ua lag luam yog cuav. Nws tsis zoo li qhov xwm txheej tau hloov pauv ntau txij li lub sijhawm ntawd.

Kev nkag siab zoo txaus kom tsis txhob poob siab thaum yuav khoom. Tsis txhob yuav los ntawm cov neeg muag khoom tsis ntseeg siab thiab ceev faj txog cov ntawv "thawj" uas pheej yig dua li cov nom tswv.

Cov neeg tawm tsam tau kawm txog kev ntim khoom cuav kom zoo tias qee zaum nws tuaj yeem nyuaj heev kom paub qhov txawv ntawm qhov qub. Nws tuaj yeem txiav txim siab ua tiav kev ntseeg siab txog qhov tseeb ntawm ib daim npav tshwj xeeb tsuas yog tom qab kuaj xyuas siv cov khoom siv tshwj xeeb:

• - rau Windows;
• - rau Mac thiab Linux.

5. Zoo

Yog tias koj twb tau ntsib qhov poob ntawm cov ntaub ntawv tseem ceeb vim yog daim npav cim xeeb tawg rau ib qho laj thawj lossis lwm qhov, tom qab ntawd thaum nws los txog rau kev xaiv, koj yuav nyiam daim npav kim dua ntawm cov npe nrov tshaj li qhov pheej yig "tsis muaj- npe".

Ntxiv nrog rau kev ntseeg siab ntau dua thiab kev nyab xeeb ntawm koj cov ntaub ntawv, nrog rau daim npav muaj npe koj yuav tau txais kev ua haujlwm siab thiab kev lees paub (qee zaum txawm tias lub neej).

Tam sim no koj paub txhua yam koj xav paub txog SD phaib. Raws li koj tuaj yeem pom, muaj ntau cov lus nug uas koj yuav tau teb ua ntej yuav daim npav. Tej zaum lub tswv yim zoo tshaj plaws yog kom muaj daim npav sib txawv rau cov kev xav tau sib txawv. Txoj kev no koj tuaj yeem ua kom zoo dua ntawm cov cuab yeej siv thiab tsis ua rau koj cov peev nyiaj tsis tsim nyog.