Which of the following is NOT a function of an operating system?

• A. Managing hardware resources
• B. Providing a user interface
• C. Performing calculations
• D. Running application software

Answer: (C)

Performing calculations is not a function of an operating system. An operating system primarily serves as a bridge between the hardware of a computer and the application software that users want to run. Its core functions include managing hardware resources such as the CPU, memory, and storage; providing a user interface that allows users to interact with the system; and facilitating the execution of application software by allocating resources as needed.

While operating systems can support applications that perform calculations, they themselves do not engage in this task directly. Instead, they enable applications to operate efficiently, allowing them to perform calculations either through their own processing capabilities or by utilizing the hardware resources managed by the operating system. In contrast, managing hardware resources, providing a user interface, and running application software are all essential operational tasks that an operating system is designed to perform.