Computer Memory

By   May 19, 2015

Memory is major part of computers that categories into several types. Memory is best storage part to the computer users to save information, programs and etc, The computer memory offer several kinds of storage media some of them can store data temporarily and some them can store permanently. Memory consists of instructions and the data saved into computer through Central Processing Unit (CPU).

Computer Memory diagram

Types of Computer Memorys:

Memory is the best essential element of a computer because computer can’t perform simple tasks. The performance of computer mainly based on memory and CPU. Memory is internal storage media of computer that has several names such as majorly categorized into two types, Main memory and Secondary memory.

1. Primary Memory / Volatile Memory.

2. Secondary Memory / Non Volatile Memory.

1. Primary Memory / Volatile Memory:

Primary Memory also called as volatile memory because the memory can’t store the data permanently. Primary memory select any part of memory when user want to save the data in memory but that may not be store permanently on that location. It also has another name i.e. RAM.

Random Access Memory (RAM):

The primary storage is referred to as random access memory (RAM) due to the random selection of memory locations. It performs both read and write operations on memory. If power failures happened in systems during memory access then you will lose your data permanently. So, RAM is volatile memory. RAM categorized into following types.

  • DRAM
  • SRAM

2. Secondary Memory / Non Volatile Memory:

Secondary memory is external and permanent memory that is useful to store the external storage media such as floppy disk, magnetic disks, magnetic tapes and etc cache devices. Secondary memory deals with following types of components.

Read Only Memory (ROM) :

ROM is permanent memory location that offer huge types of standards to save data. But it work with read only operation. No data lose happen whenever power failure occur during the ROM memory work in computers.

ROM memory has several models such names are following.

1. PROM: Programmable Read Only Memory (PROM) maintains large storage media but can’t offer the erase features in ROM. This type of RO maintains PROM chips to write data once and read many. The programs or instructions designed in PROM can’t be erased by other programs.

2. EPROM : Erasable Programmable Read Only Memory designed for recover the problems of PROM and ROM. Users can delete the data of EPROM thorough pass on ultraviolet light and it erases chip is reprogrammed.

3. EEPROM: Electrically Erasable Programmable Read Only Memory similar to the EPROM but it uses electrical beam for erase the data of ROM.

Cache Memory: Main memory less than the access time of CPU so, the performance will decrease through less access time. Speed mismatch will decrease through maintain cache memory. Main memory can store huge amount of data but the cache memory normally kept small and low expensive cost. All types of external media like Magnetic disks, Magnetic drives and etc store in cache memory to provide quick access tools to the users.

173 Comments on “Computer Memory

  1. Anonymous

    It is very short but miningful .thnk u

  2. Anonymous

    radical this helped me a lot…………………………

  3. Anonymous

    Thank you very much…
    For halp in my semester examination…

  4. axel

    Compltly wrong…..both RAM & ROM comes under Primary….Secondary are like HDD,CD-DVD,Magnetic-optical disks etc

  5. Ghulam Hussain

    good information but why hard drive, flash drive mentions in this these are very important.

  6. Anonymous

    Easly understandable for all students!’
    Thanks a lot of.

  7. Anonymous

    Easly understandable for all students.!!
    Really superb.!!

  8. Anonymous

    This is good and helpful but RAM and ROM belong to the same type of memory

  9. Anonymous

    Out of primary and secondary storage which memory do you think is best suited to store a program written in C language is which memory is best suited when we want to execute that program given reasons?

  10. Aamir jasral

    very easy to understand this is good for read and it helps me a lot in my ICT exams……….
    thankssssssssssssssssss alottttttt

  11. Shivam Dwivedi

    What the hel aa u givin d wrng info… How can u say… Primary memory to b volatile… What a great blunder… N also… U say only RAM to b primary, wowww… Great… N u say ROM to be secondary storage…
    What do u get by publishing such a wrng info fo d learnrs…
    Shame on u!!!


    Tanks and it is very meaning full…………..

  13. Mohammad Atik pathan

    very usefull i love this

  14. Anonymous

    It helps my youger brother so much.

  15. Shahina Parveen


  16. Nandini Tiwari

    It’s a very best and simple thing for me.

  17. Khushi kumari

    Please tell me which type of memory in CPU, Data bus, ports,mother Board,Hard disks, input device, output device.
    Please tell me fast.

    Thanks for this information.

  18. Jenny Quackles


  19. Aviral Gupta

    Anybody tell that ROM is the permanent memory that’s true or false…

  20. Tabish

    ROM is a Non Volatile Memory, but it doesn’t count in Secondary Memory, I think it’s a primary memory..

  21. Niraj Rajaure

    rom comes under primary memory primary memory categorize into 2 ram and rom so rom comes under primary memory… hard disk, floppy disk,magnetic tape, cd,dvd flash disc comes under secondry …

  22. Aman Rumar Raman


  23. random person

    dis gud, I likes dis. I thinks dat dis helpt me alots ons my works….dis likes funs. my mummy teached me gud ingish and she did the ritings fo da meeeees
    dis mines letters do and eyes thinks dis gud for da mees.

  24. random person

    dis gud, I likes dis. I thinks dat dis helpt me alots ons my works….dis likes funs. my mummy teached me gud ingish and she did the ritings fo da meeeees
    dis mines letters do and eyes thinks dis gud for da mees.
    …bys da mees whos is the 28.

  25. Magan

    This, s best matter because is simple language and written in detail.

  26. Yeah

    Made my mind confused Its just making me soooooo confuse man….

  27. priyanka morampudi

    this helps me to learn for NCO because i’m very bad at computers

  28. Aliza ali

    Very nice. Web site

    Very Nice website


  29. Gourav Chugh

    Hello Sir/Madam, Please provide full information about computer memory.

  30. Anonymous

    not clearly elaborated coz secondary is all about main storage.

  31. ssenkaayi bonny

    thanks much this is very helpful especially to us who whish to know more about computers

Leave a Reply

Your email address will not be published.