How an SSD stores data with trapped electrons

How an SSD stores data with trapped electrons

Every file on your SSD is a pattern of trapped electrons.

Each flash cell has a tiny insulated trap. A high voltage pushes electrons in, and they stay there with the power off. To read it, the drive puts a smaller voltage on the cell and checks if current flows: an empty cell lets it through, a charged one blocks it.

A TLC cell holds one of eight charge levels, so each one stores three bits. The eight cells in this film really do spell SSD. Save it for later.

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