Floppy disk, another interesting invention of the computer age is a storage device used to store and carry data. Although obsolete now a days, it has been replaced by technologically superior storage media like CD, DVD, Pen drive, portable hard disc etc. Historically this technology was dominant in the markets for more than two decades. Floppy disks are commonly identified by their sizes. The 3.5 inch disk with a maximum capacity of 1.44MB was the most commonly used floppy.  The data inside a floppy is magnetically stored on a thin plastic sheet which is coated with iron oxide. It is commonly called as magnetic disk.