Operating System (OS) Definition: An Operating System (OS) is a system software that manages computer hardware, software resources, and provides common services for computer programs. It acts as an intermediary between computer hardware and the user, facilitating efficient execution of programs. Functions of an Operating System: Process Management: The OS manages processes in the system, including process scheduling, execution, and termination. It ensures the smooth operation of all processes by allocating CPU time and resources. Memory Management: The OS manages the computer’s memory, allocating and deallocating memory spaces as needed by processes. It also ensures the optimal use of memory and handles virtual memory. File System Management: The OS organizes and manages files on storage devices. It provides access control, storage allocation, and file protection. Device Management: The OS controls hardware devices such as printers, disk drives, and ...