what is secondary storage.

What is secondary storage?
Secondary storage device is normally reffers to non volitile storage devices.
example of secondary storage devices is :
Hard disk , flash memory, floppy disk , compact disk ctc
these devices are used to store data permanently. it can not loss data even its power is lost.
Normally these devices are used to store our important data for long time.
these are also called extenal storege storage devoces. External storage devices have more storing capacity then primary storage devices.

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secondary storage

External storage

non volitile storage.

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