Computer Science GCSE
CPU access to instructions and data
What CPU access to instructions and data means in Computer Science GCSE, as defined for OCR.
Definition of CPU access to instructions and data
Check what you remember
Read the wording for your board, then hide it and explain CPU access to instructions and data in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Primary storage is the memory the CPU accesses directly while a program runs, because the CPU can only execute instructions and process data held in immediately addressable memory.
Topics that use CPU access to instructions and data
- Primary storage (memory) (OCR GCSE)
Related terms
- Cache
- Cache size
- Computer start-up sequence
- Page file or swap file
- Primary storage
- Speed and performance
- Start-up and firmware
- Swapping
Using CPU access to instructions and data in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
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