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A flash drive is a portable computer drive that uses
A flash drive is a portable computer drive that uses flash memory
Flash memory is an Integrated circuit, electronic Non-volatile memory, 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 t ...
. Flash drives are the larger memory modules consisting of a number of flash chips. A flash chip is used to read the contents of a single cell, but it can write entire block of cells. They connect to a USB port and function as a folder.
Specific flash drive types
Memory cards: * Flash memory-basedCompactFlash
CompactFlash (CF) is a flash memory mass storage device used mainly in portable electronic devices. The format was specified and the devices were first manufactured by SanDisk in 1994.
CompactFlash became one of the most successful of the e ...
(CF) card (including CFast
CompactFlash (CF) is a flash memory mass storage device used mainly in portable electronic devices. The format was specified and the devices were first manufactured by SanDisk in 1994.
CompactFlash became one of the most successful of the e ...
card) and XQD card
The XQD card is a memory card format primarily developed for flash memory cards. It uses PCI Express as a data transfer interface.
The format is targeted at high-definition camcorders and high-resolution digital cameras. It offers target r ...
(Note: some other types of CF and XQD card are not flash memory-based)
* Memory Stick (MS)
* MultiMediaCard (MMC)
* Secure Digital card (SD, SDHC, SDXC)
* SmartMedia card (SM)
* xD-Picture Card (xD)
Other:
* Solid-state drive, SSD, using flash memory (a few SSDs use DRAM or MRAM)
* USB flash drive
A flash drive (also thumb drive, memory stick, and pen drive/pendrive) 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 u ...
(UFD)
See also
*Flash memory
Flash memory is an Integrated circuit, electronic Non-volatile memory, 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 t ...
* Comparison of memory cards
References
Solid-state computer storage media {{compu-storage-stub