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
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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.

