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This is one way that Flash Memory storage devices can be built.

  1. ROM, all such devices are a type of Programmable Read Only Memory (PROM), memory that although it can be written to takes orders of magnitude longer to complete a write cycle than it takes to complete a read cycle.
  2. 16GB, size in this case about 16 billion bytes.
  3. NAND, the type of logic function used internally by the device, This can be either NAND or NOR but NAND seems to have become most common. NAND means NOT AND while NOR means NOT OR, just as in the corresponding logic gate types.
  4. Flash, is a specific type of PROM architecture that reduces the impact of the slow write cycle by writing large "sectors" of many bytes simultaneously instead of one byte at a time as in other PROM architectures. Flash also provides many "sector" buffers that the computer may be writing data into while the chip is busy programming one "sector" buffer into the memory. Flash is ideal to provide a solid state replacement for harddisks.
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Q: What is ROM 16GB NAND Flash?
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