What is Memory in a computer?

Memory in a computer :-

Memory is an essential component of a computer which stores program, data, results etc.

Every computer contains several types of memories to store the data and instruction.

Types of memory:-

The data-storage components of a computer can be divided into following four groups:

   [1]    Main memory

   [2]   Secondary memory

   [3]    Cache memory

   [4]     CPU registers

[1]    Main memory:

•        It is also known as Primary memory or Semiconductor memory.
•        Stores data which are currently needed in CPU during operations. 
•         It is relatively large and fast to store data.

[2]   Secondary memory:

•         It is also known as Auxiliary memory.
•         Data which is not being currently processed stored in secondary memory.
•        Stores larger amount of data but also much slower.
•         It must store data permanently
•        Examples: Hard disk, floppy etc.

     [3]    Cache memory:

•     Placed between CPU and main memory
•         Consist of static memory
•         Stores data which are frequently used by CPU
•         Faster to access the data stored in cache memory

     [4]     CPU registers:

•        These are high speed registers
•         Used for temporary storage of data and instructions     

 



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Computer memory, memory, What is memory, Types of memory, Main memory, Secondary memory, Auxiliary memory, memory hierarchy, cache memory, register, RAM, ROM