Computer Architecture Questions
Primary storage, also known as main memory or internal memory, refers to the immediate storage that is directly accessible by the CPU. It is volatile in nature, meaning that its contents are lost when the power is turned off. Primary storage is typically faster and more expensive than secondary storage. Examples of primary storage include RAM (Random Access Memory) and cache memory.
Secondary storage, on the other hand, is non-volatile storage that is used for long-term data storage. It is not directly accessible by the CPU and is typically slower and less expensive than primary storage. Secondary storage retains its contents even when the power is turned off. Examples of secondary storage include hard disk drives (HDD), solid-state drives (SSD), optical discs (CDs, DVDs), and magnetic tapes.
In summary, primary storage is the immediate and volatile storage directly accessible by the CPU, while secondary storage is non-volatile storage used for long-term data storage.