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CompactFlash IDE (ATA) emulation speed is usually specified in "x" ratings, e.g. 8x, 20x, 133x. This is the same system used for CD-ROMs and indicates the maximum transfer rate in the form of a multiplier based on the original audio CD data transfer rate, which is 150 kB/s.
SanDisk co-founder Eli Harari developed the Floating Gate EEPROM which proved the practicality, reliability and endurance of semiconductor-based data storage. [5] In 1991, SanDisk produced the first flash-based solid-state drive (SSD) in a 2.5-inch hard disk drive form factor for IBM with a 20 MB capacity priced at about $1,000. [6]
On January 7, 2009, SanDisk and Sony announced the Memory Stick XC format (tentatively named "Memory Stick Format Series for Extended High Capacity" at the time). [ 33 ] [ 34 ] The Memory Stick XC has a maximum theoretical 2 TB capacity, 64 times larger than that of the Memory Stick PRO Duo which is limited to 32 GB.
The other type of wear leveling is called static wear leveling which also uses a map to link the LBA to physical memory addresses. Static wear leveling works the same as dynamic wear leveling except the static blocks that do not change are periodically moved so that these low usage cells are able to be used by other data.
HDD random access times range from 2.9 ms (high-end) to 12 ms (laptop HDDs). [33] Power consumption High-performance SSDs use about half to a third of the power required by HDDs. [34] HDDs use between 2 and 5 watts for 2.5-inch drives, while high-performance 3.5-inch drives can require up to 20 watts. [35] Acoustic noise
Secure Digital (SD Card), Secure Digital High-Speed, Secure Digital Plus/Xtra/etc (SD with USB connector) miniSD card; microSD card (aka Transflash, T-Flash, TF) SDHC; WiFi SD Cards (SD Card With WiFi Card Built in) Powered by Device. (Eye-Fi, WiFi SD, Flash Air) Nano Memory (NM) card; MU-Flash (Mu-Card) (Mu-Card Alliance of OMIA) C-Flash
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