প্রায়ই এই ধরনের প্রশ্ন আসে পরীক্ষাতেঃ
What is the highest level of Memory Hierarchy?
আমাদের আগে বুঝতে হবে Memory Hierarchy কি?
In practice, a memory system is a hierarchy of storage devices with different capacities, costs, and access times. CPU registers hold the most frequently used data. Small, fast cache memories nearby the CPU act as staging areas for a subset of the data and instructions stored in the relatively slow main memory.
There are three major storage levels.
- Internal – Processor registers and cache.
- Main – the system RAM and controller cards.
- On-line mass storage – Secondary storage.
Image: Memory Hierarchy
CPU contains register and cache memory. Register is the hightest level of memory hierarchy, and it is the fastest of all.
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