Beginning of Essay
The term robot comes from the Czechoslovakian wordfor "forced labor," invented by Karel Capek. Karel Capek used robots in his plays and had them look and behave like people. Today, the word "robot" is harder to define because of new designs and technology. ....

Middle of Essay
.... key wor ds in their definition are "reprogrammable" and "multifunctional." By "reprogrammable" they mean that if a robot gets a new assignment, it will need new instructions, but its basic structure will not change (except maybe a new mechanical hand). By "multifunctional" they mean a robot is the mechanical counter part of a computer that can handle various problems without any major hardware modifications. The only thing that changes when a robot is reassigned is its program of instructions. In modern robots, programmable microprocessors control all the robot's movements and actions. Robots can be taught by using a teaching mode. An operato ....