SDHC vs SDXC
SDHC thiab SDXC yog ob hom ntawm SD (Secure Digital) nco daim npav hom. Kev Ruaj Ntseg Digital –SD yog daim npav tsis muaj zog (Flash Memory) siv hauv cov khoom siv mobile vim lawv qhov loj me. Lawv siv nyob rau hauv lub xov tooj ntawm tes, lub koob yees duab digital, thiab palmtop / ntsiav tshuaj computers. SD yog tus qauv tswj hwm los ntawm Secure Digital Association, thiab daim npav nco tau tsim nyob rau ntau pua hom.
SD daim npav muaj nyob rau hauv peb chav kawm, muab faib raws li lub peev xwm. Cov no yog SDSC - Ruaj Ntseg Digital Standard Capacity, SDHC - Ruaj Ntseg Digital Siab Muaj Peev Xwm, thiab SDXC Ruaj Ntseg Digital eXtended Capacity. Thawj daim npav SD muaj peev xwm txog li 2GB nkaus xwb. Yog li ntawd, SDHC thiab SDXC tau qhia kom muaj peev xwm muaj nyob hauv SD phaib. SD phaib yog tsim nyob rau hauv 3 qhov ntau thiab tsawg hauv txhua qeb. Standard, mini thiab micro yog peb hom nyob rau hauv ntau lawm. Lawv muaj qhov loj me hauv qab no.
Standard: 32.0 × 24.0 × 2.1 mm los yog 32.0 × 24.0 × 1.4 mm
Mini: 21.5 × 20.0 × 1.4 mm
Micro: 15.0 × 11.0 × 1.0 mm
SD phaib tau muab cais ntxiv los ntawm kev hloov cov ntaub ntawv ceev. Cov ntaub ntawv hloov ceev txiav txim siab cov kev siv tshwj xeeb ntawm SD phaib. Yog li ntawd, cov chav kawm ceev kuj tseem ceeb heev thaum xav txog daim npav SD. Muaj 5 chav kawm ceev; lawv muaj li no.
• Chav 2 – 2 MB/sec (MBps) rau SD video kaw
• Chav 4 – 4 MB/sec (MBps) siab-txhais yees duab (HD) mus rau Full HD video kaw
• Chav 6 – 6 MB/sec (MBps) rau HD video, • Chav 10 – 10 MB/sec (MBps) rau Full HD video kaw thiab sib txuas ntawm HD tseem
• UHS Ceev Chav Kawm 1 - siv rau kev tshaj tawm hauv lub sijhawm thiab cov ntaub ntawv HD loj
SDHC
Txhais hauv version 2.0 ntawm SD specification, SDHC tso cai rau daim npav muaj peev xwm ntawm 4 txog 32 GB. SDHC yog tsim nyob rau hauv tag nrho peb qhov ntau thiab tsawg; standard, mini, thiab micro SDHC. SDHC cards yog formatted nrog FAT32 cov ntaub ntawv system.
Cov neeg nyeem daim npav SDHC tuaj yeem nyeem SDSC (SD Standard Capacity) phaib thaum SDHC daim npav nyeem tsis tau siv SDSC nyeem.
SDXC
SDXC yog tus qauv txuas ntxiv ntawm SD tus qauv, uas yog tsim los tso cai cia muaj peev xwm ntawm 32 GB txog 2 TB (Terabytes). SDXC phaib hauv kev tsim khoom tam sim no muaj peev xwm txog 64 GB nkaus xwb. Lawv tau formatted nrog exFAT cov ntaub ntawv hom.
Ntxiv rau, cov cuab yeej qub qub tsis tuaj yeem siv daim npav SDXC, txawm tias SDXC cov khoom siv tuaj yeem lees txais txhua hom SD phaib.
Dab tsi yog qhov txawv ntawm SDHC thiab SDXC?
• SDHC thiab SDXC yog ob hom SD (Secure Digital) flash nco phaib siv hauv cov khoom siv txawb / txawb thiab khoos phis tawj. SDHC los hauv cov qauv, cov pob me me thiab micro thaum SDXC los hauv cov qauv thiab pob khoom
• SDXC yog tus qauv tshiab ntawm SD specifications.
• SDHC phaib muaj peev xwm cia li ntawm 4GB txog 32 GB thaum SDXC phaib muaj qhov cia li ntawm 32 GB - 2TB. Tsuas yog daim npav mus txog 64 TB tam sim no hauv kev tsim khoom.
• SDHC phaib muaj FAT32 cov ntaub ntawv, whereas SDXC muaj exFAT cov ntaub ntawv hom.
