meaning of flash memory

1. flash memory Flash Erasable Programmable Read-Only Memory Flash ROM Flash Erasable Programmable Read-Only Memory flat 1. Lacking any complex internal structure. "That bitty box has only a flat file system, not a hierarchical one. " The ver form is flatten. Usually used pejoratively at least with respect to file systems. 2. Said of a memory architecture like that of the VAX or Motorola 680x0 that is one big linear address space typically with each possible value of a processor register corresponding to a unique address. This is a Good Thing. The opposite is a "segmented" architecture like that of the Intel 80x86 in which addresses are composed from a base-register/offset pair. Segmented designs are generally considered cretinous. 3. A flat domain is one where all elements except bottom are incomparable equally well defined. E. g. the integers. [Jargon File] flat address space The memory architecture in which any memory location can be selected from a single contiguous block by a single integer offset. Almost all popular processors have a flat address space, but the Intel x86 family has a segmented address space. A flat address space greatly simplifies programming because of the simple correspondence between addresses pointers and integers.
2. nonvolatile storage that can be electrically erased and programmed anew

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