MEMORY/LECTURE-3

MEMORY

Where data is stored either temporary  or permanent

Primary memory:

It is the main memory that can store data

There are various types of primary memory

  > ROM: Read only memory

                  Used to load the oprating system into memory

  > RAM: Random acess memory

                  It is used to store data temporarily for the purpose of execution of command specified by

                  User

  > Cache memory: it is used to store the path of data i.e. frequently used by user.

  > Register: these are the temporary memory that are used by processors to process the input & store                       the result temprorly

Secondary memory: 

only examples (figure is self explainatory) Hardisk drive parts:

   Ø  Plate

   Ø  Read/write head

   Ø  Tracks

   Ø  Sector

   Ø  Seek time

   Ø  Latency time

   Ø  Spindle motor

Seek time: it is the time that is taken by read /write head to search particluar task

Latency time: it ttis the time taken by read/write head to findout particular sector

(for further reference click here)