• Memory is used as a working storage for temporarily/permanent storing the data and intermediate results generated during program execution.
  • Computers use two kinds of memories: primary & secondary.
  • Primary Memory – 
    • The Primary Memory is often referred to as RAM in everyday language.
    • It is a read/write memory used to store both the program and data.
    • Since RAM is volatile, computers also use a second level of memory- secondary memory- to permanently store the contents.
  • Secondary Memory – 
    • Hard Disk is the non-removable secondary storage device which stores virtually everything on the machine.
    • Computers also use other removable secondary memories like CD-ROMs, Magnetic tapes and recently Flash Drives to permanently take backup of the data onto Hard Disk or to transfer data from one machine to another.

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