Primary Storage Flashcards

OCR GCSE J277 Computer Science specification

Primary storage

Fast, volatile memory used to store data and instructions currently in use by the CPU.

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Terms in this set (10)

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Primary storage

Fast, volatile memory used to store data and instructions currently in use by the CPU.

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RAM

Random Access Memory, a volatile type of primary storage used for temporary storage of data and instructions.

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ROM

Read-Only Memory, a non-volatile type of primary storage used to store essential start-up instructions.

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Volatile memory

Memory that loses its contents when power is turned off, e.g., RAM.

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Non-volatile memory

Memory that retains its contents even when power is turned off, e.g., ROM.

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Purpose of RAM

Stores data and instructions currently being used by the CPU for quick access.

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Purpose of ROM

Stores the instructions required to boot up the computer (start-up instructions).

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Virtual memory

A section of secondary storage used as if it were RAM when RAM is full.

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Cache

A small, very fast type of memory located close to the CPU, used to store frequently accessed data.

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Difference between RAM and ROM

RAM is volatile and used for temporary storage, while ROM is non-volatile and stores permanent start-up instructions.

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