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GCSE Computer Science · key term
Able to retain stored data when power is removed.
Used by AQA
Paper 2
Describes memory or storage that retains its contents when power is removed.
Revise: Main Memory vs Secondary StorageSecondary storage is any non-volatile storage mechanism that is not directly accessible by the CPU. Examples include a hard disk drive and solid-state storage.
Include both parts of the secondary storage definition: it is non-volatile and is not directly accessible by the CPU.
Do not say that all main memory is volatile: RAM is volatile, but ROM is non-volatile.
Non-volatile means data is retained without power, not that it can never be changed or deleted.
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Able to retain stored data without a power supply.
