How does a usb flash disk work?
2023-10-14
A Usb Flash Disk (also known as a Usb Drive) is a portable storage device that can be used to store and transfer data. It consists of a FLASH Memory chip, a controller chip and a USB interface. Here`s how a Usb Flash Drive works: 1. Connection: Insert the U disk into the USB interface of the computer. The computer detects the device being plugged in and loads the appropriate driver. 2. Identification: The computer communicates with the controller chip on the Flash Memory chip through the USB interface. The controller chip sends information about the device, such as capacity, file system, etc., to the computer. 3. Storage: The computer sends the data to the controller chip through the USB interface, and then the controller chip stores the data in the flash memory chip. Flash memory chips use non-volatile storage technology that retains data after power is removed. 4. Reading: When data needs to be read, the computer sends read instructions to the controller chip through the USB interface. The controller chip reads data from the flash memory chip and transmits it to the computer through the USB interface. 5. Delete and write: The computer can send delete and write instructions to the controller chip through the USB interface. The controller chip will perform corresponding operations in the flash memory chip according to the instructions. Generally speaking, USB flash drives communicate with computers through USB interfaces and use flash memory chips to store and read data. It has the characteristics of portability, high-speed transmission and rewritability, making it a commonly used storage device.
