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A Child Passes a Person on the Street That Has

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A child passes a person on the street that has a short hairstyle.Although this hairstyle is more typical for males,most children understand that the person could be a female.This understanding,that sometimes the underlying reality cannot be directly observed,is referred to as


Definitions:

Output Field Devices

Devices that receive electrical signals from a control system and perform actions, such as valves, lights, or motors.

Output Module

A component of a PLC or other control system that provides the interface for output signals to external devices or equipments.

Input Module

A component in programmable controllers or computers that receives and processes input signals from sensors or other devices.

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