Pen drive is a hardware used for data storage and data transfer.It includes a flash memory.It has large memory space.It is a portable Universal Serial Bus(USB) for storing,transferring the files,data files,audio files,video files,photos,etc.It is very small in size,to fit into a pocket.It ranges from 1 GB to 64 GB.Now,more storage pen drives are also produced.Its usage is simple and easy.Its one end is connected to the port of the laptop,desktop,etc.
It has small printed circuit board that carries the circuit elements and a USB connector.It is insulated electrically,it has a protective covering around it made of plastic or metal or rubberized case.Modern flash drives use USB 2.0 connectivity.
These pen drives use gate style storage which include AND,NOT,NAND gate technologies. The data are is stored in blocks,they are not stored randomly.Its working is not similar to ROM and RAM.Its cost is low.The transfer speed depends upon the computer's speed.Producers define the speed in Megabytes/second(MB/s).It is an improvement of older floppy disks and other storage devices.It has some limitations.The usage can be limited by defining its Program-Erase cycles(P/E).The device can have 100,000 P/E before the files get corrupted.
TAGS-PENDRIVE,ROM,RAM,AND,NOT,NAND GATES,STORAGE DEVICES,USB.