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Flash memory is a non-volatile storage device in which data
- a)can be erased physically
- b)can be erased magnetically
- c)can be erased electrically
- d)cannot be erased
Correct answer is option 'C'. Can you explain this answer?
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Flash memory is a non-volatile storage device in which dataa)can be er...
Flash memory is a electronic, solid state, non-volatile memory storage device which can be electrically erased and reprogrammed.
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Flash memory is a non-volatile storage device in which dataa)can be er...
Understanding Flash Memory
Flash memory is a type of non-volatile storage that retains data even when the power is turned off. It is widely used in USB drives, SSDs, and memory cards. The correct answer to the question regarding how data can be erased from flash memory is option 'C' - it can be erased electrically.
Why Option C is Correct?
- Electrical Erasure Process:
- Flash memory uses a technology called EEPROM (Electrically Erasable Programmable Read-Only Memory).
- Data is stored in memory cells made from floating-gate transistors, which can hold an electrical charge.
- To erase data, a higher voltage is applied to the gate, which allows the electrons to escape from the floating gate, effectively resetting the memory cell.
- Non-Volatile Nature:
- Unlike volatile memory (like RAM), which loses data when power is off, flash memory retains data due to its non-volatile design.
- This makes it ideal for portable devices.
Why Other Options are Incorrect?
- Option A (Physically Erased):
- Physical erasure is not applicable to flash memory. Physical methods would destroy the memory chip itself.
- Option B (Magnetically Erased):
- Flash memory is not based on magnetic storage principles, unlike hard drives. Thus, magnetic erasure is not relevant.
- Option D (Cannot be erased):
- Flash memory can indeed be erased, but it must be done electrically, contradicting this option.
In summary, the ability to erase data electrically is a fundamental characteristic of flash memory, distinguishing it from other storage types.
Flash memory is a type of non-volatile storage that retains data even when the power is turned off. It is widely used in USB drives, SSDs, and memory cards. The correct answer to the question regarding how data can be erased from flash memory is option 'C' - it can be erased electrically.
Why Option C is Correct?
- Electrical Erasure Process:
- Flash memory uses a technology called EEPROM (Electrically Erasable Programmable Read-Only Memory).
- Data is stored in memory cells made from floating-gate transistors, which can hold an electrical charge.
- To erase data, a higher voltage is applied to the gate, which allows the electrons to escape from the floating gate, effectively resetting the memory cell.
- Non-Volatile Nature:
- Unlike volatile memory (like RAM), which loses data when power is off, flash memory retains data due to its non-volatile design.
- This makes it ideal for portable devices.
Why Other Options are Incorrect?
- Option A (Physically Erased):
- Physical erasure is not applicable to flash memory. Physical methods would destroy the memory chip itself.
- Option B (Magnetically Erased):
- Flash memory is not based on magnetic storage principles, unlike hard drives. Thus, magnetic erasure is not relevant.
- Option D (Cannot be erased):
- Flash memory can indeed be erased, but it must be done electrically, contradicting this option.
In summary, the ability to erase data electrically is a fundamental characteristic of flash memory, distinguishing it from other storage types.
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Flash memory is a non-volatile storage device in which dataa)can be erased physicallyb)can be erased magneticallyc)can be erased electricallyd)cannot be erasedCorrect answer is option 'C'. Can you explain this answer?
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