Which of the following is a secondary memory device?

Q. Which of the following is a secondary memory device?

A

Keyboard

B

Disc

C

ALU

D

Mouse

Solution:

Primary memory is the main memory (Hard disk, RAM) where the operating system resides.
Secondary memory can be external devices like CD, floppy magnetic discs etc.
secondary storage cannot be directly accessed by the CPU and is also external memory storage.

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