Page 10 - TP_Prime_v2.2_Class_4
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Secondary Memory

                  Secondary memory is permanent in nature and is not directly accessed by the Cpu.

                  It allows users to store data that may be easily retrieved. It is cheaper as compared
                  to primary memory.

                  Secondary memory devices are also called secondary storage  devices. They are
           Prime (Ver. 2.2)-lV  categorised into three types: Magnetic disk, Optical disc, and Flash drive.




                                                    Secondary Memory





                    Magnetic Disk                        Optical Disc                       Flash Drive



           8
                      Hard Disk        CD      DVD        Blu-ray Disc       Pen Drive       Memory Card         SSD


                  Magnetic Disk

                  A device, covered with a magnetic coating, is called a magnetic disk. you can record

                  and erase data on a magnetic disk any number of times.
                  Hard Disk

                  the hard disk consists of one or more magnetic disks. each

                  disk in the pack has top and bottom surfaces on which
                  data is recorded using magnetic head. It is permanently

                  fixed in the system unit. the most important function of
                  the hard disk is to store program files and data files.                           Hard Disk

                  Hard disks are available in a variety of sizes with storage capacities as high as 5 TB

                  (teraByte) or even more. the Cpu accesses data stored on a hard disk much faster
                  than other storage devices.

                                               External hard disks are also available. They are the hard

                                               disks that can be connected to any computer with the help
                                               of  a  uSB  port.  they  offer  the  convenience  of  expanding

                                               storage capacity without the need for internal installation
                                               and are commonly  used for  backing up data, transferring
                     external Hard Disk
                                               files, or increasing storage space on laptops and desktops.
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