U disk, referred to as U disk, also known as USB flash drive, is the homonym of U disk. It belongs to a mobile storage device, which is used for backing up data and is convenient to carry. U disk is a kind of flash memory, so it is also called flash disk. It is characterized by small size, portability, large storage capacity and low price.
The computer converts the binary digital signal into a composite binary digital signal (adding instructions such as allocation, check and stack) and reads it into the USB chip adapter interface. The chip processing signal is distributed to the corresponding address of EPROM2 memory chip to store binary data, thus realizing data storage. The control principle of EPROM2 data storage is that the voltage controls the voltage of the gate transistor, and the junction capacitance of the gate transistor can store the voltage value for a long time, which is why USB can store data after power failure.
U disk has a USB interface and is a USB device. If the operating system is Windows 2000/XP/2003/Vista or Apple, the system will automatically identify the U disk by inserting it directly into the USB interface on the front panel or the back of the chassis. If the system is 98, you need to install a USB flash drive to use it.