Difference between Primary and Secondary Memory Storage

What is Memory?

memory is very much like our genius as it is used to store data and instructions. Computer memory is the repositing outer space where datum is to be processed, and instructions needed for march are stored. The memory is divided into a bombastic act of smaller portions called the cell. Every cell/ placement has a singular address and a size .
Two types of memories are :

  • Primary Memory
  • Secondary Memory

In this tutorial, we will differentiate between Primary and Secondary memory, and teach :

What is chief Memory ?

Primary Memory is the independent memory of the computer system. Accessing data from elementary memory is faster because it is an home memory of the computer. The primary memory is most volatile, meaning data in primary memory does not exist if it is not saved when a exponent failure occurs .
The elementary memory is a semiconductor memory. It is costlier compared with secondary memory. The capacity of basal memory is identical much limited and is constantly smaller compares to junior-grade memory .
Two types of Primary Memory are :

  • RAM
  • ROM

KEY DIFFERENCE

  • Primary memory is also called internal memory whereas Secondary memory is also known as a Backup memory or Auxiliary memory.
  • Primary memory can be accessed by the data bus whereas Secondary memory is accessed by I/O channels.
  • Primary memory data is directly accessed by the processing unit whereas Secondary memory data cannot be accessed directly by the processor.
  • Comparing primary and secondary storage devices, Primary storage devices are costlier than secondary storage device whereas Secondary storage devices are cheaper compared to primary storage device.
  • When we differentiate primary and secondary memory, Primary memory is both volatile & nonvolatile whereas Secondary memory is always a non-volatile memory.
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RAM (Random Access Memory)

Random access memory which is besides known as RAM is generally known as a main memory of the calculator system. It is called impermanent memory or hoard memory. The information stored in this type of memory is lost when the office add to the personal computer or laptop is switched off .

ROM (Read Only Memory)

It stands for Read Only Memory. ROM is a permanent wave type of memory. Its content is not lost when the power add is switched off. The calculator manufacturer decides the information of ROM, and it is permanently stored at the clock of manufacturing which can not be overwritten by the exploiter .

What is Secondary Memory?

All secondary storehouse devices which are capable of storing senior high school volume data is referred to secondary memory. It ’ s slower than primary memory. however, it can save a substantial sum of data, in the crop of gigabytes to terabytes. This memory is besides called accompaniment memory or aggregate storage media .

Types of Secondary memory

Mass storage devices:

The magnetic harrow provides bum repositing and is used for both belittled and big computer systems.

Two types of magnetic disks are :

  • Floppy disks
  • Hard disks

Flash/SSD

solid State Drive provides a dogged flash memory. It ’ second very debauched compared to Hard Drives. frequently found in Mobile phones, its quickly being adopted in PC/Laptop/Mac .

Optical drives:

This secondary storage device is from which datum is take and written with the help of lasers. ocular disks can hold data up to 185TB .
Examples

  • CD
  • DVD
  • Blue Ray
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USB drives:

It is one of the most popular types of junior-grade storage device available in the market. USB drives are removable, rewritable and are physically very minor. The capacity of USB drives is besides increasing significantly as today 1TB playpen drive is besides available in the market .

Magnetic tape:

It is a serial access repositing device which allows us to store a very high volume of data. normally used for backups.

Characteristics of Primary Memory

  • The computer can’t run without primary memory
  • It is known as the main memory.
  • You can lose data in case power is switched off
  • It is also known as volatile memory
  • It is a working memory of the computer.
  • Primary memory is faster compares to secondary memory.

Characteristics of Secondary Memory

  • These are magnetic and optical memories
  • Secondary memory is known as a backup memory
  • It is a non-volatile type of memory
  • Data is stored permanently even when the power of the computer is switched off
  • It helps store data in a computer
  • The machine can run without secondary memory
  • Slower than primary memory

Primary Memory Vs Secondary Memory

here is the remainder between Primary and secondary coil memory :

Difference between Main memory and Secondary memory
difference between Main memory and secondary memory

Parameter
Primary Memory
Secondary Memory

Nature
The primary memory is categorized as volatile & nonvolatile memories.
The secondary memory is always a non-volatile memory.

Alias
These memories are also called internal memory.
Secondary memory is known as a Backup memory or Additional memory or Auxiliary memory.

Access
Data is directly accessed by the processing unit.
Data cannot be accessed directly by the processor. It is first copied from secondary memory to primary memory. Only then CPU can access it.

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Formation
It’s a volatile memory meaning data cannot be retained in case of power
failure.
It’s a non-volatile memory so that that data can be retained even after power
failure.

Storage
It holds data or information that is
currently being used by the processing unit. Capacity is usually in 16 to 32 GB
It stores a substantial amount of data and information. Capacity is generally from 200GB to terabytes.

Accesses
Primary memory can be accessed by the data bus.
Secondary memory is accessed by I/O channels.

Expense
Primary memory is costlier than secondary memory.
Secondary memory is cheaper than primary memory.

Summary

  • Computer memory is the storage space where data is to be processed, and instructions needed for processing are stored
  • Two types of memories are: Primary memory and Secondary memory
  • Primary memory is the main memory of the computer system. Accessing data from primary memory is faster because it is an internal memory of the computer.
  • All secondary storage devices which are capable of storing high volume data is referred to as secondary memory
  • Types of Primary Memory 1) RAM, 2) ROM
  • Types of Secondary Memory 1) Hard Drive, 2) SSD, 3) Flash, 4) Optical Drive, 5) USD Drive, 3) Magnetic Tapes
  • The computer can’t run without primary memory. You can lose data in case power is switched off
  • Data is stored permanently in Secondary Memory even when the power of the computer is switched off
  • Primary memory is expensive and is available in limited in size in a computer.
  • Secondary memory is cheaper compared to primary memory.
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