What term describes the process of returning some part of output to be used as input in a closed loop system?

The term that describes the process of returning some part of the output to be used as input in a closed loop system is known as feedback. In a closed loop system, feedback is a crucial component as it allows the system to self-regulate and improve its performance by adjusting its operations based on the results of previous outputs. This concept is widely applied in various fields, including engineering, control systems, and software development, where the output provides information that influences future input decisions.

For instance, in a temperature control system, the thermostat (the feedback mechanism) evaluates the current temperature (output) and adjusts the heating or cooling (input) based on whether the temperature is above or below the desired setpoint. This constant cycle ensures that the system remains stable and operates within the intended parameters.

The other concepts mentioned do not adequately describe this specific process. Recycling refers to the reuse of materials, the Input/Output Cycle describes the broader process of data processing, and Output Validation focuses on verifying that the output meets certain criteria or standards. None of these terms capture the essence of using output to influence input like feedback does.