![]() Here the memory cells are stacked vertically, allowing for more storage capacity in the same silicon footprint. ![]() For example, you may have seen some Samsung SSDs labeled “V-NAND” or “vertical” NAND. There are many different variations in the technology within the world of NAND memory. To change the contents of a cell, you simply alter the level of charge inside it. ![]() By measuring the charge level in a memory cell, you can tell whether it represents a one or a zero. Within NAND memory, there are “cells” that can hold different electrical charge levels. It’s named after one of the types of logic gates you can make in a microchip. Modern SSDs (and most USB flash drives and memory cards) use a type of flash memory called NAND flash memory.
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