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Primary and Secondary MemoryComputer memory is divided into primary memory and secondary memory.Primary memoryfast random access memory (RAM) ,read-only memory (ROM), Cache (?)RAM holds the programs and data that the processor is actively working with.ROM contains software that is used in Input/Output operations. It also containssoftware that loads the Operating System in Primary Memory.The CPU can read and write to RAM but it can only read from ROM.RAM is volatile while ROM is not.Secondary memory is used for long-term storage of programs and data.Examples of secondary memory devices are:hard disks, floppy disks and CD ROMs.Memory Hierarchy : organization of different memory level in computers
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