Secure Digital (SD) is a non-volatile memory card format developed by Matsushita, SanDisk, and Toshiba for use in portable devices. Today it is widely used in digital cameras, digital camcorders, handheld computers, PDAs, media players, mobile phones, GPS receivers, and video games. Standard SD card capacities range from 1 MB to 2GB. The capacity range for high capacity SDHC cards overlaps slightly, beginning at 4 GB but reaching as high as 32 GB...
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Secure Digital (SD) is a non-volatile memory card format developed by Matsushita, SanDisk, and Toshiba for use in portable devices. Today it is widely used in digital cameras, digital camcorders, handheld computers, PDAs, media players, mobile phones, GPS receivers, and video games. Standard SD card capacities range from 1 MB to 2GB. The capacity range for high capacity SDHC cards overlaps slightly, beginning at 4 GB but reaching as high as 32 GB as of mid-2009. The SDXC (eXtended Capacity), a new specification announced at the 2009 Consumer Electronics Show, will allow for up to 2 TB capacity cards.
The format has proven very popular. Changes to the interface of the established format have made some older devices designed for standard SD cards (≤4GB) unable to handle newer formats such as SDHC (≥4GB). All SD-cards have the same physical shape and form factor however, which causes confusion for some consumers.
In August 1999, SanDisk, Matsushita, and Toshiba first agreed to develop...
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