NAND
From PHWiki
NAND is a function of at least two binary inputs. It returns 0 (false) if all of its inputs are 1 and 1 (true) otherwise.
NAND also refers to a type of flash chip that is medium fast to read and write. It is called "NAND" because each memory cell resembles a logic gate that performs the NAND function. NAND flash memory is generally used for storing large blocks of data (as opposed to code for execution), typically used for image files (digital cameras) or audio files (MP3 players). Compare to NOR.
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