| A USB flash drive is a NAND type flash memory. The | | | | The USB 2.0 are much faster than the optical disk in |
| NAND type flash memory was designed for the | | | | terms of the data storage in much smaller space. |
| exchange and saving of data as alternative to the | | | | The name “drive” is given to the USB flash |
| magnetic disk. The NAND type flash memory has the | | | | drive because the USB flash appears to the OS of |
| capacity to hold large volumes of data. The writing | | | | the computer like a mechanical drive and the method |
| and erasing speed is also fast. On the other hand the | | | | of access is also the same. |
| random access is rather slow because it uses block | | | | The USB connector must be protected and kept |
| as a unit for the purpose of writing and reading. | | | | safe using a removable cap or by retracting the USB |
| The USB drive is made up of secure case small circuit | | | | connector into the body of the USB flash drive.The |
| board and is integrated with a universal serial bus | | | | USB flash drives use all the power supply from the |
| connector. The secure case is typically made up of | | | | host connection. Some high speed USB drives may |
| rubber or metal. This secure case protects the circuit | | | | require more power supply than provided by the bus |
| board of the USB drive from damage and increases | | | | powered USB hub. Therefore these drives will |
| the robustness. The USB drives are very much | | | | function when they are directly plugged into the self |
| smaller than the floppy disks and are rewritable. | | | | powered hub or the host controller. |
| The USB drive can be easily inserted into the USB | | | | The USB drives are most often composed of three |
| port of the computer. With the help of USB flash | | | | components, the male connector type A, crystal |
| drive, data can be safely and easily transferred. The | | | | oscillator and the USB mass storage controller. The |
| USB drive is more reliable and safer than the floppy | | | | function of the type A connector is to interface with |
| disks. The USB drives are small and compact, | | | | the system of the host computer. While on the |
| therefore the users can carry them easily in their | | | | other hand the USB mass storage controller helps in |
| pockets or they can attach it with their key chains | | | | balancing and storage of the data. The USB mass |
| as well. | | | | storage controller enhances and carries out smooth |
| The USB drives are more reliable when huge amounts | | | | processing of the decoding, encryption and transfer |
| of data has to be moved. Some of the USB drives | | | | of the data between the systems. The function of |
| allow 1 million erase or write cycles. The USB Memory | | | | the crystal oscillator is to make sure that the out put |
| card readers have a removable flash memory card. | | | | of the flash drive is of the best quality. |
| The USB flash drives provide more benefits to its | | | | The reason that the USB drives became more |
| users than the other storage devices. Almost all the | | | | popular is that the floppy drives were most of the |
| computers and laptops have the USB ports, | | | | time failed to read the data from the floppy disk. |
| therefore the users can easily transfer the data. | | | | Therefore, the users had problems while transferring |
| Most of the modern operating systems have the | | | | the data using the floppy disks. The USB flash drives |
| USB mass storage standard which is required by the | | | | do not have movable parts like the floppy disks had. |
| USB flash drives to operate. | | | | |