Robot is a kind of intelligent machine which can work semi independently or fully. The earliest robot in history can be found in the puppet robot that emperor Yang of Sui ordered craftsmen to build according to the image of Liu He. It has a mechanism, and has the ability of sitting, rising, worshiping and lying.
Robot has the basic characteristics of perception, decision-making and execution, which can assist or even replace human beings to complete dangerous, heavy and complex work, improve work efficiency and quality, serve human life, expand or extend the scope of human activities and capabilities.
Source: @missmaelaroux