What is memory and its types? Explain
Answers
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➡️Computer memory refers to the devices that are used to store data or programs on a temporary or permanent basis for use in computer.
There are two types of memory-:
=>Primary or main memory
=>Secondary or Auxiliary memory
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Computer memory is the storage space in computer where data is to be processed and instructions required for processing are stored
➪There are three types of memory.They are :-
- Cache memory
- Primary memory
- Secondary memory
Cache memory is a very high speed semiconductor memory which can speed uh CPU.The parts of data and programs are transferred from disk to cache memory by operating system, from where CPU can access them.
It holds only those data and instructions on which computer is currently working.It has limited capacity and data losts when power is switched off.These memories are not fast.It is divided into two categories:- RAM and ROM.
This type of memory is also known as external memory.It is non- volatile.It is slower than primary memory.These are used for storing data permanently.For example:- CD-ROM , DVD etc.