Computer memory is a crucial component of computers that stores data and instructions for processing. It allows the CPU to access information quickly, enabling efficient operation of applications and systems. There are various types of memory, including RAM (Random Access Memory) and ROM (Read-Only Memory), each serving different purposes in a computer's architecture. The performance of a computer heavily relies on its memory capacity and speed. RAM is volatile, meaning it loses its data when powered off, while ROM retains information permanently. Understanding these types helps users optimize their systems for better performance and reliability.