Taw qhia rau cov khoom siv SD daim npav

SD daim npav (kev ruaj ntseg daim npav cim xeeb) yog daim npav ntau lub cim xeeb ua ke tsim los ntawm Panasonic, Toshiba thiab SanDisk raws li mmcmuti mediacard thaum Lub Yim Hli 1999.

SD daim npav yog ib tiam tshiab ntawm lub cim xeeb ntaus ntawv raws li semiconductor flash nco. Nws yog dav siv nyob rau hauv portable pab kiag li lawm xws li hluav taws xob dictionaries, xov tooj ntawm tes, digital koob yees duab thiab tsheb navigation systems vim nws me me, ceev cov ntaub ntawv kis tau tus mob ceev, kub pluggable thiab muaj peev xwm loj [6].

SD daim npav tus qauv yog tus qauv tsim thiab patented los ntawm SD Card Association rau tshem tawm cov khoom siv, uas yog siv los tsim tag nrho qhov ntev, hluav taws xob cuam tshuam thiab kev sib txuas lus ntawm daim npav. Hauv SD daim npav 3.0 specification, theoretical siab tshaj peev xwm ntawm SD daim npav tuaj yeem ncav cuag 2TB, thiab qhov theoretical siab tshaj plaws nyeem ntawv thiab sau ntawv ceev tuaj yeem ncav cuag 104mb / S (hauv qhov tseeb 4.10 specification, theoretical siab tshaj nyeem ntawv thiab kev sau ntawv tau nce mus rau 312mb / s). Ntxiv mus, daim npav micro SD yog daim npav thib ob tsawg tshaj plaws hauv SD hom, nrog qhov loj ntawm 15mm * 11mm * 1mm. Yog tias cov txiaj ntsig zoo ntawm SD daim npav tuaj yeem siv rau cov tshuab ntsuas tsis siv neeg, xws li khaws cia cov ntaub ntawv kuaj mob Cov ntaub ntawv xws li satellite load cov ntaub ntawv thiab cov ntaub ntawv foob pob hluav taws tuaj yeem muab cov txheej txheem tshiab ua tau rau cov ntaub ntawv khaws cia hauv kev sim thiab tswj cov tshuab tam sim no, thiab ua lub luag haujlwm tsis tuaj yeem hloov pauv hauv miniaturization, muaj peev xwm loj thiab cov ntaub ntawv ceev ceev.