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.
History of robots
The most famous Japanese robotic automata was presented to the public in 1927. The Gakutensoku was supposed to have a diplomatic role. Actuated by compressed air, it could write fluidly and raise its eyelids.. Many robots were constructed before the dawn of computer-controlled servomechanisms, for the public relations purposes of major firms. These were essentially machines that could perform a few stunts, like the automata of the 18th century. In 1928, one of the first humanoid robots was exhibited at the annual exhibition of the Model Engineers Society in London. Invented by W. H. Richards, the robot - named Eric - consisted of an aluminium suit of armour with eleven electromagnets and one motor powered by a 12-volt power source. The robot could move its hands and head and could be controlled by remote control or voice control.