What is SD card?
The Secured Digital (SD) memory card is a flash memory storage device. It is jointly developed by Matsushita Electric (Panasonic), ScanDisk and Toshiba.

What are the characteristics of Secured Digital Cards?
The SD card is about the size of a postage stamp and weighs approximately two grams. It is similar in size to the Multimedia Card (MMC) but smaller than CompactFlash and SmartMedia cards.

SD cards uses flash memory to provide non-volatile storage, which means they do not require power to retain the information stored on them.

SD cards provide encryption capabilities for protected content to ensure secure distribution of copyrighted material, such as digital music, video and ebooks.

What devices can use SD cards?
The SD card features a high data transfer rate and low battery consumption, both primary considerations for portable devices. It is ideally suited for portable digital devices such as car navigation systems, cell phones, audio players, digital still cameras, digital video camcorders and PDAs.

How can we obtain the specification of "SD Memory Card"?
SD Memory Card specification can be downloaded from the website of the SD Association, but the content verification is limited to development purposes of SD application products.

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