Q. What is the full form of ‘SD’ in SD Cards?
Solution:
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Secure Digital (SD) is a non-volatile memory card format .
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SD is a type of memory card used to store data in portable electronic devices. The first SD cards were introduced in 1999.
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They used almost the same form factor as the existing MultiMediaCard (MMC) format, but were slightly thicker (2.1 mm vs 1.4 mm).
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