The concept of artificial intelligence is as old as the ancient Greeks and as new as the robotic rover currently probing the pinkish terrain of Mars, 352 million miles from Earth. In between have come "reasoning calculators," "analytical engines," and Leonardo da Vinci's walking lion. Modern AI began with the advent of the computer.
Greek myths of Hephaestus, the god of blacksmiths and artisans, include the notion of intelligent robots.
Greek philosopher and mathematician Archytas builds a wooden pigeon whose movements are controlled by steam.
Spanish mystic and theologian Ramon Llull invents a mechanical device that tries to prove the veracity of ideas.
Clock makers use their skills to create machine-like animals. German Hans Bullmann crafts the first androids, mechanical figures that simulate people by playing musical instruments.
Mechanical toys proliferate, epitomized by this automaton doll and French inventor Jacques de Vaucanson's automated duck, which could flap its wings.
French weaver Joseph Marie Jacquard, using punch cards, creates a programmable loom. Charles Babbage, an English mathematician and engineer, builds an "analytical engine," a programmable calculating machine.
Czech author Karel Capek introduces the word "robot" in a play about machines replacing human workers.
British scientists build Colossus, the world's first electronic computer, to crack German codes.
British scientist William Grey Walter constructs two autonomous robots – turtles – that mimic lifelike behavior.
British mathematician Alan Turing devises a test to recognize machine intelligence.
IBM debuts the first commercially successful general-purpose computer.
Computer scientist John McCarthy coins the term "artificial intelligence."
Unimation, a US company, sells the world's first industrial robots.
The Stanford Research Institute creates the first mobile robot, Shakey, which can maneuver around simple obstacles.
Stanley Kubrick's movie "2001: A Space Odyssey" comes out, highlighting the dark side of computer intelligence.
Expert systems, software programs that mimic the knowledge and decision-making ability of human specialists, spread widely.
AI advances on many fronts, from speech recognition to intelligent tutoring to investment decision-making to information management.
IBM's Deep Blue supercomputer defeats world chess champion Garry Kasparov.
Interactive robot pets, called "smart toys," go on sale. Autonomous and talking robots are developed. The UN estimates in 2000 that close to 750,000 industrial robots are in use worldwide.
IBM's Watson supercomputer beats the best human contestants on "Jeopardy!"
The Mars rover Curiosity, bristling with lasers, sensors, and chemical analyzers, begins its exploration of the Red Planet.