[maemo-users] What is flash?

From: Karl Kobel karlkobel at sbcglobal.net
Date: Tue Jul 22 04:31:40 EEST 2008

FLASH is a type of memory that retains its state until changed. One of 
the characteristics of FLASH are that the bits can only be individually 
programmed from the 1 state to a 0. In order to get the state back to 1, 
it must be 'erased' in big chunks.

Within the category of FLASH, there are two major types; NOR and NAND.

NAND is like non-volatile RAM and is used for program execution. It 
takes more space to create a bit, so are smaller in size. Not sure, but 
I don't believe this type is used in the Nokia's.

NOR is higher in density, and is the type used in SD cards.


Jeff Treague wrote:
> I here alot about flash what is it?
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