SD Card ua haujlwm li cas?
Nov 07, 2022| Tsis zoo li lub hard drive, SD phaib tsis muaj cov khoom siv kho tshuab, tab sis theej siv flash nco thev naus laus zis los khaws cov ntaub ntawv. Flash nco yog ib hom ntawv lub cev muaj zog heev uas tso cai rau rov sau tau thiab tsis muaj cov ntaub ntawv poob thaum hloov tawm.
Yog li ntawd nws txawv ntawm ib txwm hard disk, uas txuag cov ntaub ntawv ntawm kev nyeem ntawv sib nqus thiab sau ntawv, whereas SD card siv hluav taws xob nyeem ntawv thiab sau ntawv. Txhawm rau txuag cov ntaub ntawv hauv hluav taws xob, thev naus laus zis tso cov khoom siv hluav taws xob rau ntawm daim phiaj siv hluav taws xob los ntawm kev siv hluav taws xob hla lub transistor (cov khoom siv hluav taws xob sib npaug ntawm qhov hloov).
Thaum qhib daim npav SD (raws li pom hauv daim duab 2), peb tuaj yeem pom tias nws yog tsim los ntawm silicon wafer, uas muaj kev sib xyaw ua ke nrog rau kev tswj cov nti thiab cov khoom khaws cia. Cov khoom khaws cia yog tsim los ntawm ntau cov micro-transistors.
Lub transistor khaws cov ntaub ntawv digital hauv daim ntawv ntawm electrons ntawm silicon wafer. Lub transistor ua raws li lub qhov rooj, tsuas yog cia cov ntaub ntawv los ntawm kev hais kom ua. Cov electrons yog khaws cia rau hauv ib daim phiaj uas cais tawm ntawm qhov seem ntawm silicon wafer. Daim phiaj no siv tau ntau zaus los khaws cov ntaub ntawv.
SD daim npav yuav kav ntev npaum li cas?
Raws li kev ntseeg nrov, daim npav SD tsis muaj lub neej ntev. Zoo li ntau yam khoom siv hluav taws xob, nws raug puas ntsoog thaum lub sijhawm siv. Qee zaum nws tuaj yeem nrhiav cov ntaub ntawv ntawm SD phaib rau ntau xyoo, thaum SD daim npav tsis hloov. Thaum SD daim npav tsis tau hloov pauv lossis siv, nws yuav dhau los ua lub neej ntev dua.
Yog tias siv, daim npav SD yuav muaj hnub nyoog dhau lub sijhawm - qhov txwv tsis pub muaj nyob hauv nws lub neej voj voog yog tus lej ntawm kev sau ntawv ua haujlwm ntawm thaj chaw khaws ntaub ntawv. Txawm li cas los xij, kev nyeem cov ntaub ntawv tsis tshua muaj kev puas tsuaj ntau dua li kev sau ntawv, uas yuav tsum muaj qhov hluav taws xob ntau dua, ua rau muaj kev puas tsuaj zuj zus mus rau qhov chaw cia khoom raws sijhawm.