12 Examples of Secondary Memory in Computer System | What is Secondary Memory

Introduction to Examples of Secondary Memory in Computer

The secondary memory devices in computer system are used to perform operation and permanently store the output.

They are widely used in permanent data storage.

The secondary memory can be categorized in two types.
  • Fixed Storage Devices.
  • Removable Storage Devices.

The fixed storage devices are installed in the computer system. These devices once get damaged can be easily removed and replaced according to our needs.

Types of fixed storage:
  • Internal flash memory (rare)
  • SSD (solid-state disk) units
  • Hard disk drives (HDD)
Removable Storage Devices.

These are the storage device which operates and handle outside the computer system. They are portable and can carry huge volume of data from one location to another.

They can be connected to computer system with ease as well as detaching from the system has no side effects to system.

Examples of Removable Storage Devices are
  • CD
  • DVD
  • Blu Ray
  • Pen Drives
  • Memory Card
In this article we will learn 10 Examples of Secondary Memory in Computer System | What is Secondary Memory with different types and images.
Let get started

What is Secondary Memory in Computer System?

The Secondary memory is the storage devices of the computer system which are capable of storing huge amount of data and information almost permanently.

The secondary storages are non-volatile memory not only they can store data and information permanently the data can be retrieved can be easily whenever user request or demands.

What is Secondary Memory in Computer System
Secondary Memory in Computer 

The data present in the secondary memory stores data even there is no electric or power supply.

Unlike primary memory, secondary memory doesn't directly access the data through the CPU.

The data and information which is stored in computer secondary memory is firstly loaded in RAM {Random Access Memory} that is called “Primary Memory” and later it passes to the primary memory processor to read and access the information.

Secondary memory is a permanent memory that is slow and cheap in comparison to primary memory.

Secondary memory is also known as external memory or auxiliary memory that is capable to store data in gigabytes and terabytes.

It is also known as backup storage or mass storage media.
Examples of Secondary memory are Magnetic tapes, Hard Disc, Compact Disk, Pen drive, Flash Drive, SSDs, Optical drives etc.

Different Types of Secondary Memory of Computer?

Hard Disk: Data is stored in computers and drive units, the magnetic disk. This data is stored in the computer and drive units.

It is a volatile memory that contains more than one platform encapsulated in an airtight seal.

Different Types of Secondary Memory in Computer System
Different Types of Secondary Memory in Computer System

A hard disk is a round disk called a splinder, which has a half-inch spindle made of aluminum and non-magnetic material, and is, mounted on a circular stack of magnetic material of 10-20 nm diameters.

It has a standard diameter of 14 inches.

Among the data stored in a hard drive are the operating system, the software installed, the user files, and the programs that contain pictures, songs, and videos.

Data on the disk is read and written utilizing a magnetic reader.

Solid State Drive: 

A solid-state drive is used to store and retrieve information in the computer, and it is just like a hard disk drive, except it does not have any moving parts.

Without moving parts, data can be accessed more easily, saving time and energy.

The cost of solid-state drives is a little more than that of hard disk drives; however, solid-state drives are less since they’re used in place of hard disk drives in laptops and desktops.

Pen drive: 

Pen drives are portable hard drives called USB flash drives, thumb drives, and jump drives.

By connecting a USB port to the computer, they are used for data storage and transfer.

These pen drives have storage capacities of 2 GB to 128 GB and can be used without using other software or hard drives since they are plug and play devices.

Blue Ray Disk:

Blue-ray disk is optical media storage used to store high definition (HD) videos and other high quality audios.

Compared with CD/DVD blue ray disk, which uses low storage, it stores up to 128 GB of data.

SD Card:

It is also known as Secured Digital Card.

It is a portable storage device mostly used in mobile phones and digital cameras; we also connect SD cards with computers and share data using the card reader.

The SD card consists numerous chips which are used to store data and information permanently. They are far different then hard disk drives that have moving parts.

The SD cards are readily available in the market which comes with different sizes and storing capacity.

Some of the SD cards are.

  • Standard SD cards
  • Mini SD cards
  • Micro SD cards
CD Drive:

It is a portable secondary storage device that is round in shape and made up of poly carbonated plastic.

It is used to store data like documents, audio files, Video, text, images, numbers and software programs.

DVD Drive:
DVD (Digital Video Disk) is a type of optical media that stores optical data. 

It has a shape like a CD but storing capacity is more than CD because of storing capacity. It is used to store movies for looking and store software programs.

What are the Four Main Types of Secondary Storage? Give Examples?

Floppy Disk:

It is also called Diskette. It is made up of a plastic disk plate. It is small, and its disk is a flexible outer layer made of iron oxide.  

Therefore predominantly called as “Floppy Disk”.

 It has a cover of plastic called a jacket. In the middle of the jacket, there is a point from where it rotates 360 RPM per minute.

Internal Hard Disk: 

it is already present in the computer; that’s why it is called an internal hard disk. It has maximum use, and software installed only uses one computer.

External Hard Disk:

It is used in the computer externally with the help of USB it is connected as pen drive it is size more than of pen drive and storing capacity and speed is more than pen drive, and it is maximum connected in laptops. 

Examples of Secondary Memory in Computer

In computers, secondary memory is used to store data and instruction permanently if the computer is off; it is used in the computer system to overcome the limitation of primary storage and has virtually unlimited capacity because the cost per bit of storage is very low.

Examples of Secondary Memory in Computer
Examples of Secondary Memory in Computer

The secondary memory of computer is comparatively slower than primary memory also used in storing large volume of data and information.

They are also called as “Auxiliary Memory”

It has an operating speed far slower than that of the primary storage and is used to permanently store large volumes of data.

Below I have listed 12 secondary memory in computer system
  • Hard Disk
  • Solid-State Drive
  • Pen Drive
  • Blu Ray Disk
  • SD Card
  • CD Drive
  • DVD Drive
  • Memory Cards
  • Floppy Disks
  • Disk Packs
  • Paper Storage (Punched Tapes , Punched Cards)
  • Magnetic Tapes

What is the use of Secondary Memory? Give Two Examples?

The Secondary memory is cheaper and slower compared to primary memory or main memory.

They are non-volatile memory and data and information is not lost even when there is power lost or power failure.

  • They are used to store data and information permanently.
  • Data and information once stored can be retrieved whenever requested.
  • They are highly portable and can be transferred from one location to another.
  • They are also used to install application and system software.
  • They are also used to create backup of important data.

 The CPU, like the primary memory, does not directly access it is the permanent storage.

  • Pen drive
  • Memory card

What is Primary Memory in Computer System?

Primary memory is the main memory of a computer that stores the data currently processed by the processor.

It is mainly of three types: RAM, ROM, and Cache memory.

Storage capacity is low compared with the secondary memory, but it is fast in processing.

Examples of Primary Memory in Computer


It is Random Access Memory known as main memory; whenever we open any file, its first load in the RAM, then it is processed by the CPU, and anything we are processing that is also processed in the RAM.


Read-only memory is only readable memory data is stored in it is only read format we cannot do changes in it, and that data is stored in it which does not need to be modified.

Cache Memory: 

Cache memory is a small type of memory used before data goes to the RAM. It is quickly available than other primary memory. It is a fast memory that is between CPU and RAM.  

Examples of Primary Memory.
  • RAM {Random Access Memory}
  • ROM {Read Only Memory}
  • Internal  Cache Memory
Also Read::

Get In Touch

I have also written and compiled some articles on computers and telecommunications, and please go through them.

I hope you will like reading it.

I hope that all the questions and queries related 12 Examples of Secondary Memory in Computer System have been answered here in easy language.
If you have any questions related to What is Secondary Memory in Computer System.

Don’t hesitate to get in touch with me, and if you need to add, remove or update anything from the article, please let me know in the comment section or via email.

I will be more than happy to update the article. I am always ready to correct myself.

Please share this article with your friends and colleagues; this motivates me to write more related topics.

!!! Thank You !!!

16 thoughts on “12 Examples of Secondary Memory in Computer System | What is Secondary Memory”

  1. These are genuinely enormous ideas in on the topic of blogging.
    You have touched some fastidious points here. Any way keep up writing.

  2. Howdy! I simply would like to offer you a big thumbs up
    for the great information you’ve got right here on this post.
    I am coming back to your web site for more soon.

  3. Hurrah! After all I got a web site from where I can truly obtain helpful information concerning my study and

  4. I was suggested this blog by my cousin. I am not sure whether this post is written by him as nobody else know such
    detailed about my trouble. You are wonderful! Thanks!

  5. I wanted to thank you for this excellent read!! I absolutely loved every bit of it.
    I have got you bookmarked to check out new things you post…

  6. you are truly a just right webmaster. The website loading speed is
    amazing. It sort of feels that you’re doing any distinctive trick.
    Moreover, The contents are masterwork. you’ve performed a fantastic task on this subject!

  7. Secondary memory refers to any storage device other than the primary storage device, such as a hard drive. Secondary memory can be used to store data temporarily, so that it can be accessed more quickly. Secondary memory can also be used to store


Leave a Comment