Flash memory - Revision history

Anonymoususer852: Replace contents from the flash memory category to avoid unnecessary duplicates that are needed for housekeeping.

2025-08-16T02:00:02Z

Replace contents from the flash memory category to avoid unnecessary duplicates that are needed for housekeeping.

Dan Tobias at 04:36, 1 April 2014

2014-04-01T04:36:13Z

Dan Tobias at 12:53, 30 December 2013

2013-12-30T12:53:41Z

Dan Tobias: /* Links */

2013-05-19T03:55:27Z

‎Links

Dan Tobias: Created page with "{{FormatInfo |formattype=physical }} '''Flash memory''' is solid-state nonvolatile computer memory, which can be read and written and keeps its values even with power off. A ..."

2013-05-19T03:54:57Z

Created page with "{{FormatInfo |formattype=physical }} '''Flash memory''' is solid-state nonvolatile computer memory, which can be read and written and keeps its values even with power off. A ..."

New page

{{FormatInfo
|formattype=physical
}}

'''Flash memory''' is solid-state nonvolatile computer memory, which can be read and written and keeps its values even with power off. A common use is for [[thumb drive]]s, but there are many other devices which use it for storage.

The two main types are NAND and NOR, named after the logic gates they resemble. NAND memory is written or read in blocks, so it is suitable for substituting for disk drives (which read and write in sectors). NOR memory can read or write single bytes, so it can substitute for RAM.

Before flash memory, nonvolatile memory consisted of EPROMs, which could only be rewritten in their entirety (and then behaved like ROMs until rewritten again), and EEPROMs which could be rewritten in small blocks or single bytes, but were slow.

== Links ==
* [[Wikipedia:Flash memory|Wikipedia article]]
* [http://139.138.48.19/pdf/NAND/Toshiba/NandDesignGuide.pdf.pdf NAND flash applications design guide (Toshiba)]\

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-{{FormatInfo
+{{:Category:Flash memory}}
-|formattype=physical
-}}
-'''Flash memory''' is solid-state nonvolatile computer memory, which can be read and written and keeps its values even with power off. A common use is for [[thumb drive]]s, but there are many other devices which use it for storage. A type of "managed Flash memory" is [[Secure Digital]] (SD).
-−
-The two main types are NAND and NOR, named after the logic gates they resemble. NAND memory is written or read in blocks, so it is suitable for substituting for disk drives (which read and write in sectors). NOR memory can read or write single bytes, so it can substitute for RAM.
-−
-Before flash memory, nonvolatile memory consisted of EPROMs, which could only be rewritten in their entirety (and then behaved like ROMs until rewritten again), and EEPROMs which could be rewritten in small blocks or single bytes, but were slow.
-−
-== Links ==
-* [[Wikipedia:Flash memory|Wikipedia article]]
-* [http://139.138.48.19/pdf/NAND/Toshiba/NandDesignGuide.pdf.pdf NAND flash applications design guide (Toshiba)]]
-* [http://dreher.net/?s=projects/CFforApple1&c=projects/CFforApple1/main.php Compact Flash interface card for Apple I]
-* [http://dreher.net/?s=projects/CFforAppleII&c=projects/CFforAppleII/main.php Compact Flash interface card for Apple II]