A Level Computer Science OCR Practice Exam

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What characterizes an embedded system?

High processing power
Integration into larger systems to perform dedicated tasks
Ability to perform complex user interfaces
General-purpose computing capabilities

The correct answer is: Integration into larger systems to perform dedicated tasks

An embedded system is characterized by its integration into larger systems to perform specific, dedicated tasks. These systems are typically designed for particular functions within a larger context, rather than for general-purpose use. For example, a microcontroller in a washing machine is designed specifically to manage the washing process, making it efficient and reliable for that singular purpose. While high processing power might be a feature of some embedded systems, it is not a defining characteristic, as many embedded systems operate on low-power microcontrollers with limited processing capabilities tailored for their intended tasks. Similarly, the ability to perform complex user interfaces is generally not a feature of embedded systems, which often have simplified interactions suitable for their specific applications. Lastly, general-purpose computing capabilities are also not typical of embedded systems, as they are designed to execute a narrow set of functions rather than provide a broad range of computing tasks. Thus, the correct identification of an embedded system's characteristics focuses on its dedicated functionality within larger systems.