Storage Device is a device to store our data or to transfer our data from one place to another. Normally, the first storage device is Magnetic Tape. Then it undergoes to many conventional changes, we get Magnetic Drum, Floppy Disk (2 types), Hard Disk, Compact disk (popularly known as CD) and Digital Versatile Disk (DVD, i.e, one of our popular storage device). Now not only these conventional devices, we got so many new technology devices that is nothing but Pen Drives (Flash drives), Portable Hard disk and many more. BYE