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.

Answer 2

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Secondary Memory / Non Volatile Memory–

Secondary Memory is external memory of the computer. It is also known as Auxiliary memory and permanent memory.
It is used to store the different programs and the information permanently. Secondary Memory is nature non volatile. It means data is stored permanently even if power is switched off.
The secondary storage devices are:

Floppy Disks
Magnetic (Hard) Disk
Magnetic Tapes
Pen Drive
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