Which of the following is NOT a part of auxiliary memories in a Computer system?

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NTPC CBT-I (Held On: 28 Dec 2020 Shift 2)
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  1. PROM
  2. Floppy
  3. CD-ROM
  4. Magnetic tapes

Answer (Detailed Solution Below)

Option 1 : PROM
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Detailed Solution

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The correct answer is PROM.

  • PROM is not a part of auxiliary memories in a Computer system.

Key Points

  • Secondary Memory/ Auxiliary memory:
    • An Auxiliary memory is the lowest-cost, highest-capacity and slowest-access storage in a computer system. 
    • It is permanent in nature, so it is also called non-volatile.
    • In these memories, programs and data are kept for long-term storage or when not in immediate use.
    • Examples of auxiliary memories are magnetic tapes, Floppy, CD-ROM and magnetic disks.
    • The PROM (Programmable Read-Only Memory) has the option of being programmed.
    • It is not a part of auxiliary memory.

Additional Information

  • Primary Memory:
    • It is often referred to as the working memory of the main memory of a computer system.
    • It is temporary in nature, so it is also called volatile memory.
    • Its example is RAM.
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