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.
American robotics
Unimate was the first industrial robot,
which worked on a General Motors assembly line in New Jersey in 1961.
It was created by George Devol in the 1950s using his original patents. Devol, together with Joseph F. Engelberger started Unimation, the world's first robot manufacturing company.