SD (Secure Digital) card is about the size of a postage stamp and weights approximately two grams. SD card looks similar in size to a Multi Media Card but is smaller than older memory card types such as the Smart Media card and the Compact Flash card. SD cards are available with storage capacities as high as 4 gigabytes. The SD card was jointly developed by Matsushita, SanDisk, and Toshiba. The SD technology is used by more than 400 brands across dozens of product categories and more than 8,000 models, and is considered the de-facto industry standard. SD cards are more rugged than traditional storage medias. SD adapters allow the physical conversion of smaller SD cards to work in a larger physical slot, and basically are passive devices that connect the pins from the smaller SD card to the pins of the larger SD adapter.
flash memory cards, microsd memory cards, SD Card
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