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Why the CPU needs primary storage

Why the CPU needs primary storage

Overview diagram showing CPU linked to cache, RAM, ROM, and secondary storage, with arrows for start-up instructions, program loading into RAM, and virtual memory transfer when RAM is full

Primary storage, also called main memory, is the fast working area the CPU uses while the computer is running. It mainly involves RAM and ROM, while cache sits very close to the CPU to speed up access even further.

Primary storage (memory) Lesson

  1. GCSE
  2. /Computer Science
  3. /Primary storage (memory)

Step-by-step lessons covering OCR GCSE Computer Science Primary storage (memory) for GCSE Computer Science. Each lesson works through exam-style questions in Component 01 and Component 02 format. Build strong foundations in binary, logic and core programming constructs before moving on to the more complex algorithm design and evaluation questions.

Lessons