"Robot" is derived from the Czech term "robota," which meaning "forced labour." Under the Fuedal system, it originally referred to peasants who were obligated to labour for their lords.
The phrase is now applied to any man-made machine capable of performing work and other human functions.
The term "robot" was originally used in Czech playwright Karel apek's 1920 drama R.U.R.: Rossum's Universal Robots. The robots in the drama overthrow their human creators.
There hasn't been much change in nearly a century. Since we first learned what robots were, it appears that we've been inventing stories about our future robot-overlords.
3. da Vinci’s Car
One of the oldest examples of robotic design can be found in Leonardo da Vinci's notebooks from 1478.
Da Vinci's car was a spring-driven autonomous device designed, more than anything else, to make a stir in the courtroom.
Which is something we have to think it would have done. Imagine driving what would have appeared to be an enormous clock to a meeting at a period when most people would have been amazed by a particularly large horse.
4. Human Resemblance
Although the terms "android" and "robot" are often used interchangeably, they have very different meanings.
An android is a robot that looks like a person.
5. World’s First Robot Company
George Devol and Joseph Engelberger launched the world's first robot corporation in 1956. Unimation was the name of the business that created the first industrial robot.
6. Mechanical Knight
Leonardo da Vinci drew extensive ideas for a mechanical knight around the year 1495. The knight demonstrated how to construct a machine with a human-like structure that could move fluidly. It was able to stand, sit, raise its visor, and move its mouth, arms, and neck independently.
Source: Facts About Robot