June 2017
Intermediate to advanced
478 pages
13h 14m
English
The MultiMediaCard (MMC) was introduced in 1997 by SanDisk and Siemens as a form of packaged storage using flash memory. Shortly after, in 1999, SanDisk, Matsushita, and Toshiba created the Secure Digital (SD) card, which is based on MMC but adds encryption and DRM (the secure in the name). Both were intended for consumer electronics such as digital cameras, music players, and similar devices. Currently, SD cards are the dominant form of managed flash for consumer and embedded electronics, even though the encryption features are seldom used. Newer versions of the SD specification allow smaller packaging (mini SD and microSD, which is often written as uSD) and larger capacities: high capacity SDHC up ...
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