Analog robot
An analog robot is a type of robot which uses analog circuitry to go toward a simple goal such as finding more light or responding to sound. The first real analog robot was invented in the 1940s by William Grey Walter. The name of these robots were ELSIE and ELMER (Electro Mechanical Robot). The original circuitry was developed using two vacuum tubes and a photocell to search and follow a light. Recently a kind of analog robots was developed by Mark Tilden.
Robotic governance
The fundamental and philosophical question of these literary works is what will happen, if humans presume to create autonomous, conscious or even godlike creatures, machines, robots or androids. While most of the older works broach the issue of the act of creation, if it is morally appropriate and which dangers could arise, Isaac Asimov was the first to realize the necessity to restrict and regulate the freedom of action of machines. He wrote the first Three Laws of Robotics.