Flash memory (compact flash memory) is a non volatile storage memory. It has been developed from EEPROM and uses NAND and NOR memory types. This kind of memory is rising in its popularity due to its fairly high speed and reliability. Flash memory does not have any moving mechanical parts like hard drives. They are available in compact physical forms like memory cards, usb drives etc.
USB portable flash drives are found to significantly increase the speed of booting and reduce boot time. They are shock resistant and are not affected by interference as badly as hard drives. This kind of technology is available in compact usb datastick forms which is the size of a keychain. It is a high speed memory and it can be connected to the computer through usb interface.
Flash is now the kind of memory used in mobile devices. They are also available in minute physical forms like memory cards which are very thin and small.
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