What are the fundamental elements employed in the field of robotics?

When responding to a technical question like this one, the best strategy is to keep your answer brief and to the point. Expanding your answer may cause the interviewer to lose interest, especially if they are ready to move on to the next question. Long, lengthy answers may also be interpreted as a technique you use when you don't know the answer to the question.

"Although robotic principles are used across a wide variety of industries and applications, most of them have the same fundamental elements in common. This includes using electrical components, such as power supplies, actuators, sensors, motors, and other electronic controllers. Another fundamental element of robots is mechanics. These are devices or structures used to create movement and material handling. The equivalent of a robotic brain or central nervous system is the computer program. This provides the instructions the robot needs to operate effectively. Computer programs may be limited to a very specific task or can be used to interpret environmental inputs and select the appropriate response."