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MultiMediaCard (MMC) is a type of flash memory, commonly used for storage in digital cameras and other digital devices. It was introduced by SanDisk and Siemens in 1997.

The cards are 32 x 24 x 1.4 mm in size. MMC has largely been superseded by Secure Digital (SD) cards, which are in a very similar package, and some SD devices still support MMC cards.

There are several variant versions of MMC, for reduced size and power consumption or for greater storage capacity. MMC-type cards have been available in capacities up to 4Gb, although larger cards have been announced.