computer Memory

 

Dear all 

today i am going to tell you about  memory ,yes memory computer memory . when you have to listen name computer memory ,fistly strikes in your mind it seems to like my memory  as  we remember the things , yes like as computer keeps thing in computer memory but computer is a machine so something diffrent 

so children's we come to our topic computer memory where we keep data , information or store information  it is mainly two types   

1.Primary memory

primary memory is a memory where ew can strore data temprary it means it is a temprary memory or voltile memory which keeps information till power suply on when you turn off computer your data will lost  

ex: RAM, REGISTERS, CACHE Memory 

2.Secondary memory

secondary memory is a permanent memory where we keep information permanently just like your note book so it is also called 

nonvoltile memory   

EX:-Hard Disk,pen drive flash drive cd r4om compect disk ssd etc .


1. Primary Memory (Main Memory):

This is directly accessible by the CPU.

  • RAM (Random Access Memory):

    • Volatile memory – loses data when power is off

    • Temporary storage – used while running programs

    • Example: When you open a game or a document, it loads into RAM

  • ROM (Read Only Memory):

    • Non-volatile – data remains even when power is off

    • Contains permanent instructions (like booting information)

2. Secondary Memory:

Used for permanent data storage.

  • Examples:

    • Hard Disk Drive (HDD)

    • Solid State Drive (SSD)

    • USB Flash Drive

    • CDs/DVDs

  • Slower than primary memory, but can store much more data.

3. Cache Memory:

  • Very fast, small memory located close to the CPU.

  • Stores frequently used data so the CPU can access it quickly.

4. Virtual Memory:

  • An extension of RAM using space from the hard drive.

  • Helps when RAM is full by temporarily shifting data.


  


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