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Computer Memory And Its Types

Updated on September 17, 2014

Computer Memory

Memory is the internal storage area of the computer. Memory identifies the data storage.The physical memory usually referred to us main memory or RAM.

Types of Memory

  • RAM

  • ROM


RAM stands for Random Access Memory.It write data into RAM and aslo read data from RAM. RAM is a volatile memory.It holds data as long as the computer is switched on.There are two types of RAM

  • DRAM

  • SRAM



DRAM stands for Dynamic Random Access Memory. Mostly used in Personal Computers.DRAM must have electric current to maintain electrical state(refresh).Its access time is 60 - 70 nan0sec0nds.


SRAM stands for Static Random Access Memory.Its access time less than 60 nan0seconds.


DRDRAM stands for Direct Rambus Dynamic Random Access Memory.It is the new type of RAM. It access time 20 times faster than DRAM.


ROM stands for Read Only Memory.It is a non-volatile memory.It read data from memory.

Types of ROM

  • PROM



PROM stands for Programmable Read Only Memory. It acts like a ROM. There are two types of PROMs.




EPROM Stands for Erasable Programmable Read Only Memory. It can be erased and reprogrammed by the user.

EEPROM(Non Erasable):

EEPROM stands for Electrically Erasable Programmable Read Only Memory.Nonerasable PROMs cannot be changed once they are programmed.

See also:


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      23 months ago


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      Harigovind 2 years ago

      This page really usefull .so my project is already complete

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      swati 2 years ago

      Very interested data

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      muhammad ijram 2 years ago


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      prashant kumar pandey 2 years ago

      very very usefull data

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      anindita 2 years ago

      its really useful....i've learnt a lot from this article

    • profile image

      nasir akram 2 years ago

      nice data.very helpful for me.

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      M Abbas 2 years ago

      Its a very difficult explanation.............................

      Boring article.....................

    • profile image

      rani 4 years ago

      thank you its a lot of info.

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      shafiq 4 years ago

      i got it ,really an easy approach to learn..intersting article

    • profile image

      your enemy 4 years ago

      Happy enemy day

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      45t5yh 4 years ago

      it is very boaring

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      haris ahmed 4 years ago

      this page is very interesting and we learn many things from it.

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      emaan najwa 5 years ago

      It is really a good article ,I personaly think that every thing needs improvement but i dn't agree with g tamayi who said that it's not really i want to read his or her good article which dn't need any improvemment.

    • profile image

      g tamayi 5 years ago

      not really good need for improvement honestly

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      OutsideTheLines 6 years ago from Tulsa, OK

      Very good hub. Hopefully a lot of people will read and learn from this. I can't tell you how many people have replied with 500GB when I asked them how many gigs of RAM they're running on their tablet or computer. Voted up.

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      Gavas 6 years ago

      Nice Article