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Sensors provide the robot with information about
its environment. Different sensors tell your robot
about sights, sounds, pressures, temperatures and
many other characteristics of the world around it.
Sometimes, because of the large volume of sensory
data, special sensors are used to reduce the load
on the robotic controller. The special sensors are
actually "smart" subsystems with specialized logic
to evaluate the data stream and simplify the robotic
programming.
With appropriate design, a robotic sensory system
thus can receive information about the body and
the surrounding environment, and base on these information,
the robot can then react accordingly.
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