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32 GB Compact (31 mm × 20 mm × 1.6 mm), optional DRM, up to 32 GB PRO-HG Duo 2007–2008 32 GB Compact (31 mm × 20 mm × 1.6 mm), swifter, optional DRM, up to 32 GB Micro (M2) 2006 16 GB Subcompact (15 mm × 12.5 mm × 1.2 mm), optional DRM, up to 16 GB Sony PS Vita Memory Card 2012 64 GB
The specification defines cards with a capacity of more than 32 GB up to 2 TB. The Secure Digital eXtended Capacity (SDXC) format, announced in January 2009 and defined in version 3.01 of the SD specification, supports cards up to 2 TB, [b] compared to a limit of 32 GB [d] for SDHC cards in the SD 2.0
It is known for its flash memory products, including memory cards and readers, USB flash drives, solid-state drives, and digital audio players. The company was founded in 1988 as SunDisk Corporation and renamed in 1995 as SanDisk Corporation; [ 2 ] then renamed to SanDisk LLC in 2016 when it was acquired by Western Digital . [ 3 ]
The players were available in capacities of 2 GB (e250), 4 GB (e260), 6 GB (e270), and 8 GB (e280). There is also a microSD slot for up to 2 GB of memory expansion. (Larger capacity microSDHC cards up to 32 GB are not supported by the original version 1 firmware, but can be used with alternative Rockbox firmware or on version 2 models.)
The Memory Stick Micro (M2) measures 15 × 12.5 × 1.2 mm (roughly one-quarter the size of the Duo) with 64 MB, 128 MB, 256 MB, 512 MB, 1 GB, 2 GB, 4 GB, 8 GB, and 16 GB capacities available. The format has a theoretical limit of 32 GB and maximum transfer speed of 160 Mbit/s.
The basis for memory card technology is flash memory. [2] It was invented by Fujio Masuoka at Toshiba in 1980 [3] [4] and commercialized by Toshiba in 1987. [5] [6] The development of memory cards was driven in the 1980s by the need for an alternative to floppy disk drives that had lower power consumption, had less weight and occupied less ...