What is ROM?

ROM

The abbreviation of ROM is Read-Only memory which is nothing but the permanent memory which is not erasable even when the power supply is not given to it.

What is the difference between RAM and ROM?

Both are used for memory purposes  but the only difference between RAM and ROM is 

Ram memory is a volatile memory that is erased when the power supply is cut or when the system gets restarted, 

but the ROM memory is non-erasable mostly hard disks and SSD are used as ROM for the current PCs and laptops. This memory will not be erased even when the supply gets Cuts of or when the system gets restarted.

What is the significant role of using ROM in desktops and laptops?

Mostly our operating system program and the system booting program are stored in the ROM devices like hard disks or SSD which play a significant role in booting up our system or while restarting the system.

Another purpose of ROM is that the user can permanently store their data's photos and videos in the hard disk.

SSD- used to store boot program and system OS.

HDD- used to store personal data like images and videos.

Both are used to store boot program and personal data but the reason for storing boot program & OS in SSD instead of HDD is SSD will boot the system faster than HDD.

To know more about why SSD is faster than HDD?click here to know more

some examples of ROM devices:-

1. Hard disk(HDD).
2. solid-state drive(SSD).
3. Pendrive.
4. SD card.

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