Final answer:
The operating system is a crucial program that supports a device's basic functions by managing hardware resources and enabling software applications to run.
Explanation:
Operating system is the program that supports a device's basic functions. It manages hardware resources, provides a user interface, and allows software applications to run on the device.
Operating systems like Microsoft Windows and Mac OS X handle tasks such as managing memory, controlling peripherals, and ensuring security.
Users interact with applications through the operating system, which acts as an intermediary between software programs and the device's hardware.
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