A pen drive is a portable USB flash memory can be used for fast transfer from one computer hard drive another.It audio, video and data files using a small PCB (printed circuit board), used to store large amounts of data and the Your data storage is based on EEPROM technology.

What is Flash?
Flash memory is a type of EEPROM. This is a memory chip, which contains no electricity supply store of information.

What is EEPROM?
EEPROM of electrically erasable programmable read-only memory means. It is a non-volatile memory in the form of electricity can be changed.

USB flash drive that contains a flash memory chip, a small plate, or installed in its chips and male-type USB interface to connect one end. The circuit board contains a microprocessor, which as a USB mass storage driver to enable the computer into a simple linear model of flash memory. The regulator control module’s operating mode to access NAND flash memory in the inner and implementation of the wear and tear, such as a balanced to ensure that the function of flash RAM chip, equal access to all blocks. This is important because there is no limit to 1: NAND flash memory, you can write, and copied to it using the same data is always the first block, these blocks will wear faster, which also useless in the area before the chip blocks that have been widely used in all cases.

PCB’s will also have an oscillator to provide the data transfer operational control of the clock signal, usually an LED, and sometimes two, you can display the flash unit active. As a warning that the device is in use, unplug the LED, without having to remove, may be unable to repair the damaged unit behavior.