MEMORY

Few years ago to explain about memory a page or few pages would have been enough.  But within past few years due to the vast development of CPU and to provide the playback background to these CPUs the capacity of memory also has increased.  So that now even a chapter of a book would not be enough to talk about memory.

It is not an easy task to develop fast CPUs.  Neither develop memories with big capacities.  But it is necessary to have big capacity of memories to the better performance of the enhanced CPUs,

Types of Memories

Memory basically divides into 2 main types.

 

 01.     Primary Memory                                                2.   Secondary Memory

But the word “Memory” often refers to “Primary Memory (Specially RAM)”

  01.     RAM & ROM the main memories come under “Primary Memory”

  02.     Secondary Memory means non-volatile long lasting storage devices such as Floppy Disk, Hard Disk, Zip Disk, CD-ROM, DVD ROM etc.

01.1. Random Access Memory (RAM)

Random Access Memory (RAM) is the area where data and programme stores when the CPU performs its tasks.  To perform a task CPU needs data.  Immediately before CPU used this data stores in the RAM.  And immediately after processing this data by the CPU also sends and stores in the RAM before it is send to an output device.

RAM often called as the General Purpose Memory and the Read Write Memory.