Which among the following statements is incorrect about secondary memory?

Correct option is D

Secondary memory is non-volatile, meaning data stored in secondary memory is not lost when the power is switched off. It is primarily used for long-term data storage, unlike primary memory (RAM), which is volatile.

Important Key Points:

1. Secondary Memory Characteristics:
• It is non-volatile: Data remains intact even if the power is turned off.
• Examples include hard drives, SSDs, CDs, DVDs, and USB drives.
• It is slower than primary memory but provides large storage capacity.
2. Correct Analysis of Options:
• a) It is known as the backup memory:
• Correct. Secondary memory is often referred to as backup memory as it stores data permanently.
• b) Data is permanently stored even if power is switched OFF:
• Correct. Secondary memory retains data without power, making it non-volatile.
• c) Computer may run without the secondary memory:
• Correct. A computer can operate using primary memory (RAM) and ROM without secondary storage, though no long-term storage would be possible.
• d) It is a volatile memory:
• Incorrect. Secondary memory is non-volatile, meaning it does not lose data when power is turned off.

Knowledge Booster:

1. Volatile vs Non-Volatile Memory:
• Volatile Memory: Loses data when power is turned off (e.g., RAM).
• Non-Volatile Memory: Retains data even after power loss (e.g., HDD, SSD).
2. Examples of Secondary Memory Devices:
• Magnetic Storage: Hard Disk Drives (HDD).
• Optical Storage: CDs, DVDs.
• Solid-State Storage: SSDs, USB Flash Drives.
3. Interesting Fact:
• Secondary memory provides much larger storage capacity compared to primary memory and is essential for data storage and backup.