What's is primary memory ?

Primary memory, also known as main memory or internal memory, refers to the computer's immediate storage space that is directly accessible by the CPU (Central Processing Unit). It is used to store data and instructions that are actively being processed by the CPU. Primary memory is volatile, meaning its contents are lost when the computer is powered off or restarted. It is typically faster than secondary memory (such as hard drives or solid-state drives) and includes components like RAM (Random Access Memory) and cache memory.