The development of robot system is formed with three-generation robots which have different functions and intelligence. The first-generation robots with little computer power is used abroad today. Its majority of future applications is in material handling, quality control. The addition of a relatively computer processor to robot lead to a second-generation with enhanced capabilities. Major applications of second-generation robots include spot welding, paint spraying, arc welding and some assembly. Some simple sensors, such as force , torque, can be integrated into the robot system. Third-generation robot systems have introduced and researched in the past few years, but their full potential will not be realized and exploited for many years. A typical third-generation robot system includes a separate low-level processor for each degree of freedom, and a master computer supervising and coordinating these processors as well as providing higher-level function. It is possible to perform all the functions listed with a single computer.