FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Magnetic storage devices use the principle that magnetically charged material has both a North and South Pole. These two poles are used to represent 0’s and 1’s and hence binary numbers.

Detailed explanation-2: -Data are stored on their surfaces in concentric tracks. A small electromagnet, called a magnetic head, writes a binary digit (1 or 0) by magnetizing tiny spots on the spinning disk in different directions and reads digits by detecting the magnetization direction of the spots.

Detailed explanation-3: -Magnetic devices such as hard disk drives use magnetic fields to magnetise tiny individual sections of a metal spinning disk. Each tiny section represents one bit . A magnetised section represents a binary ‘1’ and a demagnetised section represents a binary ‘0’.

Detailed explanation-4: -Magnetic storage is one of the most affordable ways to store large amounts of data. Magnetic storage uses the two types of magnetic polarities to represent the binary information consisting of zeros and ones. Commonly used devices that use magnetic storage include magnetic tape, floppy disks and hard-disk drives.