Huawei NE40E-M2 Series Hardware Description page 293

N
NVRAM
R
RAM
ROM
S
SRAM
Issue ()
Nonvolatile Random Access Memory. The data in NVRAM cannot be
lost when the system is Down.
Random Access Memory is a memory that can be lost easily, and read
and rewritten by the micro processor.
Read Only Memory is a memory that cannot be lost easily, and can
only be read, but not written by the micro processor.
Static Random Access Memory is a type of random access memory. Its
contents can be saved only if the SRAM is provided with the
uninterrupted power supply. Unlike the DRAM, the SRAM does not
need to be refreshed repeatedly.
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