Multi-Level Cell
A multi-level cell is able to store more than just single bits of information in flash memory. Incorporated into NAND flash memory, MLCs are configured in four states per cell, yielding two bits of data per cell. Due to the increase in error compared to the SLC (single-level cell), it is often necessary to utilize a more complex software that can make up for the bigger bit error ratio. But, MLC options tend to be cheaper due in part to the compressed.storage method.
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