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Flash memory is an electronic non-volatile computer memory storage medium that can be electrically erased and reprogrammed. The two main types of flash memory, NOR flash and NAND flash, are named for the NOR and NAND logic gates. Both use the same cell design, consisting of floating-gate MOSFETs. They differ at the circuit level depending on ...
A flash drive (also thumb drive, memory stick, and pen drive/pendrive) [1] [note 1] is a data storage device that includes flash memory with an integrated USB interface. A typical USB drive is removable, rewritable, and smaller than an optical disc , and usually weighs less than 30 g (1 oz).
exFAT (Extensible File Allocation Table) is a file system optimized for flash memory such as USB flash drives and SD cards, that was introduced by Microsoft in 2006. [ 7 ] exFAT was proprietary until 28 August 2019, when Microsoft published its specification. [ 8 ]
However, some flash file systems, such as APFS and F2FS, can be used on FTL-based flash devices such as SSD and eUFS. Flash-based memory devices are becoming more prevalent as the number of mobile devices is increasing, the cost per memory size decreases, and the capacity of flash memory chips increases.
This table provides summary of comparison of various flash memory cards, as of 2025. Of memory cards (i.e. intended as such, to use e.g. internally), SD cards allow for largest capacity by far (with SDUC variant up to 4 TB max. currently available, and the spec allocs up to 128 max.), though the much bulkier CFexpress cards can also match the ...
A flash drive, a typical USB mass-storage device An M.2 (2242) solid-state-drive connected into USB 3.0 adapter and connected to computer. The USB mass storage device class (MSC or UMS) standardizes connections to storage devices. At first intended for magnetic and optical drives, it has been extended to support flash drives and SD card readers.
AOL Basic Mail gives you access to your email even if your computer isn't running at the highest capacity. While all AOL products do work best with the latest version of a browser, basic mail may still work in outdated browsers.
The Common Flash Memory Interface (CFI) is an open standard jointly developed by AMD, Intel, Sharp and Fujitsu. It is implementable by all flash memory vendors, and has been approved by the non-volatile-memory subcommittee of JEDEC. [1] [2] The goal of the specification is the interchangeability of flash memory devices offered by different ...
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