What is a USB flash drive?
A USB flash drive (UFD) is a compact portable device used to store data. It pairs a
USB (Universal Serial Bus) interface with a flash memory data storage unit. The USB
flash drive is also known as memory stick, key drive, jump drive, or simply USB drive.
The shape typically resembles a human finger or thumb, hence also the name
thumb drive.
Technically, a UFD is not a drive because the flash memory technology is purely
digital, meaning it does not contain any moving parts. Flash memory is non-v
