What is Secondary Memory – Definition, Characteristics, Types, Examples

Secondary Memory – Secondary Memory is that memory in which data are stored permanently even after the shut down of the computer or any other machine.

Secondary memory is also called non-volatile memory because data are stored permanently even after the shut down of the computer or any other machine. Secondary memory is also called as secondary storage. It is not expensive than primary memory. Secondary memory is slower than primary memory but secondary memory stores huge amounts of data.

Secondary memory

A user can store data and the user can retrieve data when the user wants to get.

Secondary memory is not accessed directly by the Central Processing Unit(CPU). Instead, data of secondary memory is first loaded into Random Access Memory(RAM) and then transferred to the Central Processing Unit(CPU).

The operating system is also stored in secondary memory. So, when the computer starts then all data of OS, first loaded into Random Access Memory(RAM). There are different types of secondary memory in which the most commonly used secondary memory is – HDD, SSD, Pen drive, floppy disk, magnetic tape, Blu Ray disc, SD card, CD, DVD, HVD, etc.


Types of Secondary Memory

Types of Secondary Memory

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