Topic 2.3 · Computer · Memory & Storage

Cache & Virtual Memory

Cache & Virtual Memory is studied as part of "Memory & Storage" (Computer Fundamentals) in Computer. Primary and secondary memory, cache, RAM-ROM and storage units are basic and frequently asked.

In the examination context, cache & virtual memory carries conceptual questions that test both factual recall and analytical understanding. Revise this topic in sequence with the rest of the chapter so that chronological and thematic links are clear.

Important Facts

Cache: Fast memory between CPU and RAM
1 KB: 1024 bytes
RAM: Volatile — temporary memory
ROM: Non-volatile — permanent

Key Points

RAM — Volatile — temporary memory
ROM — Non-volatile — permanent
Cache — Fast memory between CPU and RAM
1 KB — 1024 bytes

Important Names

Jay Forrester—

Exam-Oriented Notes

»RAM loses data on power-off; ROM retains it. Storage units: B → KB → MB → GB → TB (1024 each).