What term describes integrated systems that perform dedicated functions within larger systems?

The term that describes integrated systems designed to perform specific functions within larger systems is embedded systems. These systems are highly specialized and often operate within a dedicated environment, performing tasks that are crucial to the overall functionality of the larger system they are part of.

Embedded systems are characterized by their integration of hardware and software designed for a particular application. Unlike general-purpose computing environments, embedded systems are optimized for efficiency, reliability, and performance in performing the task at hand, whether that be in automotive systems, consumer electronics, industrial machines, or medical devices.

This specialization allows them to operate with limited resources while providing the necessary functionality, which is a key element in the architecture of many modern devices and systems.