Similar Terms: SDcard
Secure Digital Memory Card: is today, the most popular flash memory card for portable, digital devices including navigational equipment, cameras, music players and smart phones. Jointly developed by Panasonic, Toshiba and SanDisk, the SD Card was introduced onto the market in 1999.
An SD card is almost identical in function to the older multimedia card (MMC); however, the SD Card provides faster data transfer speeds, larger storage capacity and the built in security features which can be used to prevent data extraction. The flash memory provides nonvolatile storage, meaning that the memory is retained even when the device it is being used in is switched off and the power consumption is lower for SD Cards - both attributes that make them ideally suited to portable devices.
SD card, miniSD card, microSD card
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