Question

what is secondary memory

Answer 1

Secondary memory is where programs and data are kept on a long-term basis. Common secondary storage devices are the hard disk and optical disks. The hard disk has enormous storage capacity compared to main memory. The hard disk is usually contained inside the case of a computer......




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Answer 2

- : secondary ( auxiliary) memory : -

This is large as well as nonvolatile in nature. This type of memory is also known as external memory or non-volatile. It is slower than main memory. These are used for storing Data/Information permanently. CPU directly does not access these memories, instead they are accessed via input-output routines. Contents of secondary memories are first transferred to main memory and then CPU can access it. For example, disk, CD-ROM, DVD, etc.

Characteristics of Secondary Memory:-

•It is known as backup memory.

•It is non-volatile memory.

•Data is permanently stored even if power is switched off.

•It is used for storage of the data in the computer.

•Computer may run without secondary memory.

•Slower than primary memories.

•These are magnetic and optical memories.

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