Interesting as the name may sound, the Thumbdrive is indeed about as big as a thumb. It isn't really a drive as the name suggests, but the name brings to mind the mechanical versions which we are all familiar with. Instead it is a solid-state device employing flash memory commonly used in Compact Flash cards, SmartMedia, MMC, MemoryStick etc. The drive also uses the USB as the interface to the PC. The USB standard also classifies these devices under the storage class. This simplifies and standardises the protocol used to control and transfer data to and from the device.
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