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Question

Which of the following is used as a primary storage device?

A
Magnetic drum
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B
Hard Disks
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C
Floppy
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D
All of above
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Solution

The correct option is A Magnetic drum

Magnetic drum is used as a primary storage device.

A magnetic drum, also referred to as drum, is a metal cylinder coated with magnetic iron-oxide material on which data and programs can be stored. Magnetic drums were once used as a primary storage device but have since been implemented as auxiliary storage devices.

In its most basic form, magnetic drum memory is simply a metal drum or cylinder, coated with a ferromagnetic recording material. Stationary write heads emit an electrical pulse, changing the magnetic orientation of a particle at a given position on the drum.

A magnetic drum, also referred to as drum, is a metal cylinder coated with magnetic iron-oxide material on which data and programs can be stored. Magnetic drums were once used as a primary storage device but have since been implemented as auxiliary storage devices.


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