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.
G.I. Robot
G.I. Robot is the name of a series of six fictional robots that appeared in comic books published by DC Comics. The very first G.I. Robot, nicknamed Joe, first appeared in "Star Spangled War Stories" #101 (February–March 1962), created by Robert Kanigher and Ross Andru, with a second one named Mac in "Star Spangled War Stories" #125 (February–March 1966), by Kanigher and Joe Kubert.