U.S. Robots and Mechanical Men.

About U.S. Robots and Mechanical Men

The Robot series is a series of 37 science fiction short stories and six novels created by American writer Isaac Asimov; the books were published between 1940 and 1995. The series is set in a world where sentient positronic robots serve a number of purposes in society. To ensure their loyalty, the Three Laws of Robotics are programmed into these robots, with the intent of preventing them from ever becoming a danger to humanity. Later, Asimov merged the Robot series with his Foundation series.