When you open an application on your computer or mobile phone, something important happens behind the scenes. The operating system does not just “run the app” in a vague way — it creates and manages a process . Understanding what a process is helps explain how computers handle multiple tasks smoothly, even with limited hardware resources. In modern systems, processes are the foundation of multitasking, responsiveness, and stability. Without them, computers would behave unpredictably or freeze whenever more than one task was attempted. Understanding the Idea of a Process A process is an active instance of a program that is currently being executed by the operating system. In simple terms: A program is a passive set of instructions stored on disk A process is a program that is running and using system resources Once a program starts executing, it becomes a process. The operating system then takes responsibility for managing it — deciding when it runs, how much memory it ...
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