What is process concept in operating system?

A process in an operating system is basically a program in execution. It includes the program code, current activity (like values in CPU registers), and resources like memory, files, and I/O devices. The OS manages processes to ensure multitasking and resource sharing.

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Think of a process as a "living instance" of a program. For example, opening Chrome creates a process, and opening multiple Chrome tabs may spawn multiple processes. The OS schedules and controls them using techniques like context switching.