ROBOT FOR LIFE
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Technically robot can be defined as a machine which includes various field of engineering and in general it can be define as the working partner of us in the field in all the situation whether it is in our house, in laboratory, in industries, in space and even for playing children.

Now the question arises do we really need robots?

Human being has some limitations regarding weather, temperature, pressure, so he is unable to work out of this limitation in those situations robots work for us, in many field like in Marines, nuclear reactor, in the deep of ocean, or to limit of space where human are helpless but robots are at work on behalf of human being.
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What exactly are robots?

Robots are nothing but combination of some computational analysis, control system and actuators and some time with self-learning process called artificial intelligence. In robots generally we get data from the sensors attached to the system now according to these data control system decides at what angle and at which position unit's motors has to move to reach the destination and then with the help of End-effectors robot performs its assigned work like search or picking and placing, opening the gate.

This is the basic of any robot, for giving additional functionality to robot some computational part should be added to it. For example in legged robot when legs are moving then special care should be taken about the center of gravity so that a balance can be introduce for both the legs and robot can walk like a human.
There are many companies and research institutes working in this field, giving us ultimate robots like Honda's ASIMO “Humanoid robot” its like man made human being, PUMA The working hand, snake like robots (hyper redundant), wall climbing robots and many more. In addition, a very recent Ever-1 from Korean Institute for Industrial Technology is capable of showing expressions on her face, only the second android to do this after Japan's Actroid. Another robot named T-Rot's has fingers, which have a human-like sense of touch, so they can hold objects by adjusting their strength depending on the material.

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