Difference between revisions of "Secure Digital"
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| − | Cards of the '''Secure Digital''' standards are the most | + | {{Flickr image |
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| + | | image_text=SD and Micro-SD cards | ||
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| + | | image_source=http://www.flickr.com/photos/24225011@N04/3187164239/in/pool-camerapedia/ | ||
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| + | Cards of the '''Secure Digital''' (SD) standards are the most common forms of [[flash memory]] used in [[digital camera]]s today. They are also used in mobile computers, PDAs, cellphones and other digital devices. | ||
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| + | The SD format was developed from the MultiMediaCard (MMC) format by a consortium of companies, including Toshiba, SanDisk and Panasonic (Matsushita) - forming the SD Card Association in 2000. | ||
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| + | SD cards range in storage capacity from 4 Megabytes up to 4 Gigabytes. Standard card dimensions are 32 x 24 x 2.1mm. A range of speeds are available; standard cards transfer data at around 900kB per second, but high-speed versions can run at 10MB per second, with some capable of much higher rates. | ||
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| + | '''Mini-SD''' and '''Micro SD''' cards use the same technology, in a smaller packages. | ||
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| + | Two extensions to the standard, SDHC (High Capacity) and SDXC (eXtended Capacity) raise the size limits to 32 Gigabytes and 2 Terabytes respectively. | ||
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| + | * [http://en.wikipedia.org/wiki/Secure_digital Wikipedia - Secure Digital] | ||
[[Category: Digital]] | [[Category: Digital]] | ||
[[Category: Storage Media]] | [[Category: Storage Media]] | ||
Revision as of 14:43, 11 January 2009
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| SD and Micro-SD cards |
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Cards of the Secure Digital (SD) standards are the most common forms of flash memory used in digital cameras today. They are also used in mobile computers, PDAs, cellphones and other digital devices.
The SD format was developed from the MultiMediaCard (MMC) format by a consortium of companies, including Toshiba, SanDisk and Panasonic (Matsushita) - forming the SD Card Association in 2000.
SD cards range in storage capacity from 4 Megabytes up to 4 Gigabytes. Standard card dimensions are 32 x 24 x 2.1mm. A range of speeds are available; standard cards transfer data at around 900kB per second, but high-speed versions can run at 10MB per second, with some capable of much higher rates.
Mini-SD and Micro SD cards use the same technology, in a smaller packages.
Two extensions to the standard, SDHC (High Capacity) and SDXC (eXtended Capacity) raise the size limits to 32 Gigabytes and 2 Terabytes respectively.
