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First, let us understand the difference between humans and robots.
                 Essential Parts of Robots

                 Humans have set body parts, whereas robots have body parts according to their needs. This is
                 the reason robots come in different sizes and shapes. Industrial robots look very different from

                 Astronaut robots.
                 Let us study about some of the essential parts of Robots.

                 Manipulator

                 The  robot’s  Manipulator  is  just  like  a
                                                             Wrist
                                                                                  Hand
                 human arm and has several joints and
                 links. They are electronically controlled               End Effector
                                                            Elbow
                 devices consisting of multiple sections.                            Shoulder   Wrist
                 A  manipulator  uses  strong  links
                 connected by joints with one fixed end

                 and one free end to perform a given
                 job,  such  as  moving  a  box  from  one     Shoulder                                        Elbow
                 location to another.                              Robotic Arm                 Human Arm
                 End Effector

                 End  effector  is  fixed  at  the  end  of  the

                 manipulator. Manipulators are usually set and
                 End effectors are free to end. They are expected
                 to  perform  the  tasks  traditionally  performed
                 by human fingers and palm of a human hand.
                 The end effectors usually do the work. They are
                 attached  to  the  robot’s  wrist  and  controlled
                 through a computer.
                 Different types of End Effectors

                 There are mainly two categories of end effectors which are grippers and tools. Gripper, at the

                 end of a robotic arm, is the most commonly used end effector in various robots like Mars rovers
                 in the form of hammers and shovels. On the other hand, Medical robots have specialised end
                 effectors such as tools for cutting in surgery and suturing incisions.



















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