This document provides an overview of robots, including their parts, functions, and history. It discusses that robots are mechanical devices guided by computer programs to perform tasks like hazardous work, with precision and speed. The key parts of a robot are its controller, manipulator, end effector, power supply, and means of programming. The work envelope refers to the robot's range of motion. Historically, early automatons date back to ancient civilizations, while modern robotics began in the 20th century.