Timeline of Computer History


Elektro at the World's Fair

Elektro and Sparko at the 1939 World’s Fair

Built by Westinghouse, the relay-based Elektro robot responds to the rhythm of voice commands and delivers wisecracks pre-recorded on 78 rpm records. It appeared at the World's Fair, and it could move its head and arms…and even "smoked" cigarettes.


The Three Laws of Robotics

May 1941 issue of Astounding Science Fiction

Isaac Asimov publishes the science fiction short story Liar! in the May issue of Astounding Science Fiction. In it, he introduced the Three Laws of Robotics:

  1. A robot may not injure a human being or, through inaction, allow a human being to come to harm.

  2. A robot must obey the orders given to it by human beings, except where such orders would conflict with the First Law.

  3. A robot must protect its own existence as long as such protection does not conflict with the First or Second Laws.

This is thought to be the first known use of the term “robotics.”


A Logical Calculus of the Ideas Immanent in Nervous Activity

Walter Pitts

Two scientists, Warren S. McCulloch and Walter H. Pitts, publish the groundbreaking paper A Logical Calculus of the Ideas Immanent in Nervous Activity. The paper quickly became a foundational work in the study of artificial neural networks and has many applications in artificial intelligence research. In it McCulloch and Pitts described a simplified neural network architecture for intelligence, and while the neurons they described were greatly simplified compared to biological neurons, the model they proposed was enhanced and improved upon by subsequent generations of researchers.



Norbert Wiener

Norbert Wiener publishes the book Cybernetics, which has a major influence on research into artificial intelligence and control systems. Wiener drew on his World War II experiments with anti-aircraft systems that anticipated the course of enemy planes by interpreting radar images. Wiener coined the term "cybernetics" from the Greek word for "steersman."


Alan Turing quoted by The London Times on artificial intelligence

Alan Turing

On June 11, The London Times quotes the mathematician Alan Turing. “I do not see why it (the machine) should not enter any one of the fields normally covered by the human intellect, and eventually compete on equal terms. I do not think you even draw the line about sonnets, though the comparison is perhaps a little bit unfair because a sonnet written by a machine will be better appreciated by another machine.”

Brain surgeon reflects on artificial intelligence

British brain surgeon Geoffrey Jefferson

On June 9, at Manchester University’s Lister Oration, British brain surgeon Geoffrey Jefferson states, “Not until a machine can write a sonnet or compose a concerto because of thoughts and emotions felt, and not by the chance fall of symbols, could we agree that machine equals brain – that is, not only write it but know that it had written it. No mechanism could feel (and not merely artificially signal, an easy contrivance) pleasure at its successes, grief when its valves fuse, be warmed by flattery, be made miserable by its mistakes, be charmed by sex, be angry or miserable when it cannot get what it wants.”


Grey Walter's Elsie

Grey Walter working with Elsie

A neurophysiologist, Walter built wheeled automatons in order to experiment with goal-seeking behavior. His best known robot, Elsie, used photoelectric cells to seek moderate light while avoiding both strong light and darkness—which made it peculiarly attracted to women’s stockings.

Isaac Asimov's I, Robot

I, Robot book cover

Isaac Asimov's I, Robot is published. Perhaps in reaction to earlier dangerous fictional robots, Asimov’s creations must obey the “Three Laws of Robotics” (1941) to assure they are no threat to humans or each other. The book consisted of nine science fiction short stories.


Squee: The Robot Squirrel

Squee: The Robot Squirrel

Squee: The Robot Squirrel uses two light sensors and two contact switches to hunt for ”nuts” (actually, tennis balls) and drag them to its nest. Squee was described as “75% reliable,” but it worked well only in a very dark room. Squee was conceived by computer pioneer Edmund Berkeley, who earlier wrote the hugely popular book Giant Brains or Machines That Think (1949). The original Squee prototype is in the permanent collection of the Computer History Museum.

The Turing Test

Alan Turing

Alan Turing creates a standard test to answer: “Can machines think?” He proposed that if a computer, on the basis of written replies to questions, could not be distinguished from a human respondent, then it must be “thinking”.


Logic Theorist

Herb Simon (L) and Allen Newell (R)

Allen Newell, Herbert A. Simon and J.C. Shaw begin work on Logic Theorist, a program that would eventually prove 38 theorems from Whitehead and Russell’s Principia Mathematica. Logic Theorist introduced several critical concepts to artificial intelligence including heuristics, list processing and ‘reasoning as search.’



RAMAC 305 disks and head assembly

The era of magnetic disk storage dawns with IBM´s shipment of a RAMAC 305 computer system to Zellerbach Paper in San Francisco. The computer was based on the new technology of the hard disk drive — the world’s first. The RAMAC disk drive consisted of 50 magnetically coated metal platters capable of storing about 5 million characters of data. RAMAC allowed real-time random access to large amounts of data, unlike magnetic tape or punched cards. A working RAMAC hard disk assembly is demonstrated regularly at the Computer History Museum.

Robby the Robot

Robby the Robot

Robby the Robot appears in MGM’s 1956 science fiction movie Forbidden Planet. In the film, Robby was the creation of Dr. Mobius and was built to specifications found in an alien computer system. Robby's duties included assisting the human crew while following Isaac Asimov's Three Laws of Robotics (1941). The movie was a cult hit, in part because of Robby's humorous personality and Robby the Robot toys became huge sellers.



John McCarthy

The programming language LISP (short for "List Processing”) is invented in 1958 by John McCarthy at MIT. A key feature of LISP was that data and programs were simply lists in parentheses, allowing a program to treat another program – or itself – as data. This characteristic greatly eased the kind of programming that attempted to model human thought. LISP is still used in a large number of artificial intelligence applications.


Automatically Programmed Tools (APT)

APT ashtray

MIT´s Servomechanisms Laboratory demonstrates computer assisted manufacturing (CAM). The school´s Automatically Programmed Tools project created a language, APT, used to control milling machine operations. At the demonstration, an air force general claimed that the new technology would enable the United States to “build a war machine that nobody would want to tackle.” The machine produced a commemorative ashtray for each attendee.

Computerizing a “World Brain”

Ted Nelson

In the 1950s several visionaries including Ted Nelson and Douglas Engelbart independently suggest computerizing the concept of cross-references, creating the clickable link we use on the Web. Nelson calls it a “hyperlink,” and the computerized text “hypertext.” Along with graphics pioneer Andries van Dam they develop many core computing functions such as word processing, online collaboration, and hypertext links. J.C.R. Licklider’s 1960 book Libraries of the Future outlines a related vision, which adds mild artificial intelligence to the mix.


Quicksort algorithm

Quicksort developer Tony Hoare

While studying machine translation of languages in Moscow, C. A. R. Hoare develops Quicksort, an algorithm that would become one of the most used sorting methods in the world. Later, Hoare went to work for the British computer company Elliott Brothers, where he designed the first commercial Algol 60 compiler. Queen Elizabeth II knighted C.A.R. Hoare in 2000.



UNIMATE robot in an industrial setting

UNIMATE, the first mass-produced industrial robot, begins work at General Motors. Obeying step-by-step commands stored on a magnetic drum, the 4,000-pound robot arm sequenced and stacked hot pieces of die-cast metal. UNIMATE was the brainchild of Joe Engelberger and George Devol, and originally automated the manufacture of TV picture tubes.


Spacewar! debuts

Screenshot, SpaceWar!

MIT receives a DEC PDP-1 computer in the fall of 1961. While there were some demonstration programs, Steve “Slug” Russell thought a game would make a better presentation. Along with Martin "Shag" Graetz and Wayne Wiitanen, he designes a space battle game based on the Lensman series of novels by E.E. "Doc" Smith called Spacewar! Two ships, one called the 'Wedge' and the other the 'Needle,' would fly around a star-filled background. Peter Samson provided a program called Expensive Planetarium that generated an accurate star-filled background. The game would later be distributed through DECUS, the Digital Equipment Corporation users group, ensuring it would become widespread in the technical and university computing communities.


The Rancho Arm

The Rancho Arm

Researchers design the Rancho Arm robot at Rancho Los Amigos Hospital in Downey, California as a tool for the handicapped. The Rancho Arm´s six joints gave it the flexibility of a human arm. Acquired by Stanford University in 1963, it holds a place among the first artificial robotic arms to be controlled by a computer.


DENDRAL artificial intelligence program

Ed Feigenbaum

A Stanford team led by professors Ed Feigenbaum, Joshua Lederberg and Carl Djerassi creates DENDRAL, the first “expert system.” DENDRAL was an artificial intelligence program designed to apply the accumulated expertise of specialists to problem solving. Its area of specialization was chemistry and physics. It applied a battery of "if-then" rules to identify the molecular structure of organic compounds, in some cases more accurately than experts.

The Orm

The Orm

Developed at Stanford University, the Orm robot (Norwegian for "snake") was an unusual air-powered robotic arm. It moved by inflating one or more of its 28 rubber bladders that were sandwiched between seven metal disks. The design was abandoned because movements could not be repeated accurately.


Joseph Weizenbaum's ELIZA

Joseph Weizenbaum

Joseph Weizenbaum finishes ELIZA. ELIZA is a natural language processing environment. Its most famous mode was called DOCTOR, which responded to user questions much like a psychotherapist. DOCTOR was able to trick some users into believing they were interacting with another human, at least until the program reached its limitations and became nonsensical. DOCTOR used predetermined phrases or questions and would substitute key words to mimic a human actually listening to user queries or statements.


SHRDLU natural language

SHRDLU original screen display

Terry Winograd begins work on his PhD thesis at MIT. His thesis focused on SHRDLU, a natural language used in artificial intelligence research. While precursor programs like ELIZA were incapable of truly understanding English commands and responding appropriately, SHRDLU was able to combine syntax, meaning and deductive reasoning to accomplish this. SHRDLU’s universe was also very simple, and commands consisted of picking up and moving blocks, cones and pyramids of various shapes and colors.

The Tentacle Arm

Minsky’s Tentacle Arm

Marvin Minsky develops the Tentacle Arm robot, which moves like an octopus. It has twelve joints designed to reach around obstacles. A DEC PDP-6 computer controls the arm, powered by hydraulic fluids. Mounted on a wall, it could lift the weight of a person.


Victor Scheinman´s Stanford Arm

The Stanford Arm

Victor Scheinman´s Stanford Arm robot makes a breakthrough as the first successful electrically powered, computer-controlled robot arm. By 1974, the Stanford Arm could assemble a Ford Model T water pump, guiding itself with optical and contact sensors. The Stanford Arm led directly to commercial production. Scheinman then designed the PUMA series of industrial robots for Unimation, robots used for automobile assembly and other industrial tasks.


Shakey the robot

SRI’s Shakey

SRI International´s Shakey robot becomes the first mobile robot controlled by artificial intelligence. Equipped with sensing devices and driven by a problem-solving program called STRIPS, the robot found its way around the halls of SRI by applying information about its environment to a route. Shakey used a TV camera, laser range finder, and bump sensors to collect data, which it then transmitted to a DEC PDP-10 and PDP-15. The computer sent commands to Shakey over a radio link. Shakey could move at a speed of 2 meters per hour.


LUNAR natural language information retrieval system

Earth's moon

LUNAR, a natural language information retrieval system is completed by William Woods, Ronal Kaplan and Bonnie Nash-Webber at Bolt, Beranek and Newman (BBN). LUNAR helped geologists access, compare and evaluate chemical-analysis data on moon rock and soil composition from the Apollo 11 mission. Woods was the manager of the BBN AI Department throughout the 1970s and into the early 1980s.


The Silver Arm

The Silver Arm

David Silver at MIT designs the Silver Arm, a robotic arm to do small-parts assembly using feedback from delicate touch and pressure sensors. The arm´s fine movements approximate those of human fingers.


Shigeo Hirose´s Soft Gripper

Soft Gripper robot

Shigeo Hirose´s Soft Gripper robot can conform to the shape of a grasped object, such as a wine glass filled with flowers. The design Hirose created at the Tokyo Institute of Technology grew from his studies of flexible structures in nature, such as elephant trunks and snake spinal cords.


C3PO and R2D2 in Star Wars

C3PO protocol droid

C3PO and R2D2 play a critical role in 1977’s blockbuster hit movie Star Wars. Throughout the movie C3PO served as an ambassador-like robot that is knowledgeable of customs, traditions and over 6,000,000 languages. C3PO's companion robot, R2D2, served as a mechanic, computer interface specialist and co-pilot for the film’s main protagonist Luke Skywalker.


Speak & Spell

TI’s Speak & Spell

Texas Instruments Inc. introduces Speak & Spell, a talking learning aid for children aged 7 and up. Its debut marked the first electronic duplication of the human vocal tract on a single integrated circuit. Speak & Spell used linear predictive coding to formulate a mathematical model of the human vocal tract and predict a speech sample based on previous input. It transformed digital information processed through a filter into synthetic speech and could store more than 100 seconds of linguistic sounds.


The Stanford Cart

The Stanford Cart

The Stanford Cart was a long-term research project undertaken at Stanford University between 1960 and 1980. In 1979, it successfully crossed a room on its own while navigating around a chair placed as an obstacle. Hans Moravec rebuilt the Stanford Cart in 1977, equipping it with stereo vision. A television camera, mounted on a rail on the top of the cart, took pictures from several different angles and relayed them to a computer.


The direct drive arm

Direct Drive arm diagram

The first direct drive (DD) arm by Takeo Kanade serves as the prototype for DD arms used in industry today. The electric motors housed inside the joints eliminated the need for the chains or tendons used in earlier robots. DD arms were fast and accurate because they minimize friction and backlash.


The FRED robot

The FRED robot

Nolan Bushnell founded Androbot with former Atari engineers to make playful robots. The “Friendly Robotic Educational Device” (FRED), designed for 6-15 year-olds, never made it to market.

The IBM 7535

IBM's 7535

Based on a Japanese robot, IBM’s 7535 was controlled by an IBM PC and programmed in IBM’s AML (“A Manufacturing Language”). It could manipulate objects weighing up to 13 pounds.


Hero Jr. robot kit

Heathkit Hero Jr. robot

Heathkit introduces the Hero Jr. home robot kit, one of several robots it sells at the time. Hero Jr. could roam hallways guided by sonar, play games, sing songs and even act as an alarm clock. The brochure claimed it “seeks to remain near human companions” by listening for voices.


Denning Sentry robot

Denning Sentry robot

Boston-based Denning designed the Sentry robot as a security guard patrolling for up to 14 hours at 3 mph. It radioed an alert about anything unusual in a 150-foot radius. The product, and the company, did not succeed.

Omnibot 2000

Omnibot 2000 toy robot

The Omnibot 2000 remote-controlled programmable robot toy could move, talk and carry objects. The cassette player in its chest recorded actions to be taken and speech to be played.


LMI Lambda

LMI Lambda

The LMI Lambda LISP workstation is introduced. LISP, the preferred language for AI, ran slowly on expensive conventional computers. This specialized LISP computer, both faster and cheaper, was based on the CADR machine designed at MIT by Richard Greenblatt and Thomas Knight.


Mitsubishi Movemaster RM-501 Gripper is introduced

Movemaster RM-501 Gripper

The Mitsubishi Movemaster RM-501 Gripper is introduced. This robot gripper and arm was a small, commercially available industrial robot. It was used for tasks such as assembling products or handling chemicals. The arm, including the gripper, had six degrees of freedom and was driven by electric motors connected to the joints by belts. The arm could move fifteen inches per second, could lift 2.7 pounds, and was accurate within .02 of an inch.


Computer defeats master chess player

Deep Thought I circuit board

David Levy is the first master chess player to be defeated by a computer. The program Deep Thought defeats Levy who had beaten all other previous computer counterparts since 1968.


Japan's Fifth Generation Computer Systems project abandoned

Feigenbaum and McCorduck’s The Fifth Generation

After spending hundreds of millions of dollars in research and development, Japan’s Ministry of International Trade and Industry (MITI) abandons its Fifth Generation Computer Systems project. The project was intended to build a platform from which artificial intelligence systems could grow and ultimately build machines that had reasoning capabilities as opposed to simply perform calculations. In part, the announcement of the Fifth Generation project in Japan caused the American computer industry to react, and a group of companies formed the Microelectronics and Computer Technology Corporation.


The MQ-1 Predator drone called to duty

MQ-1 Predator drone

The MQ-1 Predator drone is introduced and put into action by the United States Air Force and the Central Intelligence Agency. It was widely used in Afghanistan and the Pakistani tribal areas against Al-Qaeda forces and Taliban militants starting after September 11, 2001. The unmanned aerial vehicles were equipped with cameras for reconnaissance and could be upgraded to carry two missiles.


Deep Blue defeats Garry Kasparov

First meeting between Garry Kasparov and Deep Blue

With the ability to evaluate 200 million positions per second, IBM’s Deep Blue chess computer defeats the current world chess champion, Garry Kasparov on May 11. Of the six matches played, Deep Blue won two, Kasparov won one and the other three matches ended in a draw. The games took place over several days and were played in a television studio with a sold out audience of 600 watching each match on television screens in a theater several floors below. These matches were considered a rematch, as Kasparov had defeated an earlier version of Deep Blue in 1996.


Furby ignites buying frenzy

Furby toy robot

The Furby ignites a 1998 holiday season buying frenzy, with resale prices reaching $300. Each Furby initially spoke only “Furbish” but could gradually learn English commands. It communicated with other nearby Furbies using an infrared port between its eyes.


The AIBO robotic pet dog

Sony's AIBO robot pet

The Sony AIBO, the $2,000 “Artificial Intelligence RoBOt” was a robotic pet dog designed to “learn” by interacting with its environment, its owners and other AIBOs. It responded to more than 100 voice commands and talked back in a tonal language. It was even programmed to occasionally ignore commands like its biological four-legged counterparts.


Honda’s Advanced Step in Innovative Mobility (ASIMO) humanoid robot

Honda’s Advanced Step in Innovative Mobility (ASIMO) humanoid robot

Honda’s Advanced Step in Innovative Mobility (ASIMO) humanoid robot is introduced. It could walk 1 mph, climb stairs and change its direction after detecting hazards. Using the camera mounted in its head, ASIMO could also recognize faces, gestures and the movements of multiple objects. Additionally, ASIMO had microphones that allowed it to react to voice commands. About 100 were built.


DARPA's Centibots project

Army of Centibots

The Centibots project, funded by the Defense Advanced Research Projects Agency (DARPA), sought to prove that up to 100 robots could survey a potentially dangerous area, build a map in real time, and seek items of interest. Centibots communicated with each other to coordinate their effort. If one robot failed, another took over its task. The robots were completely autonomous, requiring no human supervision.

The Roomba is introduced

Cleaning path of an iRobot Roomba autonomous vacuum cleaner

iRobot’s Roomba is introduced. Using a cleaning algorithm, the autonomous robotic vacuum cleaner could clean a room while detecting and avoiding obstacles. Rodney Brooks, co-founder of iRobot, previously performed research at MIT’s Mobile Robotics Lab. The research focused on using insect-like reflex behavior instead of a central “brain” to create purposeful behavior.


CSAIL at MIT is formed

CSAIL logo

The Computer Science and Artificial Intelligence Laboratory (CSAIL) at MIT is formed with the merger of the Laboratory for Computer Science and the Artificial Intelligence Laboratory. The AI lab was founded in 1959 by John McCarthy and Marvin Minsky and the Laboratory for Computer Science was opened in 1963 as Project MAC.


Opportunity and Spirit Mars Rovers land on Mars

Opportunity self-portrait on Mars

Caltech designs both the Opportunity and Spirit Mars Rovers. Both landed in 2004 and ran 20 times longer than their planned lifetime of 90 days. While Spirit ceased to move in 2009 and communications from the rover stopped in 2010, Opportunity far exceeded its expected lifetime.


Stanford's autonomous vehicle wins 2005 DARPA “Grand Challenge”

Stanford’s Stanley self-driving vehicle

Stanford Racing Team’s autonomous vehicle “Stanley” wins the 2005 DARPA “Grand Challenge” held near Las Vegas. Driving autonomously on an off-road, 175-mile long desert course, the Volkswagen Touareg R5 finished the challenge in less than 7 hours with no human intervention--well before the 10 hour time limit. For winning the challenge, the Stanford Racing Team took home $2 million. The DARPA challenges, first introduced in 2004, are intended to spur interest and generate innovation in the area of self-driving cars.


Fiftieth anniversary of seminal artificial intelligence conference

(L to R) Trenchard More, John McCarthy, Marvin Minsky, Oliver Selfridge, and Ray Solomonoff at AI@50

AI@50, the fiftieth anniversary celebration of Dartmouth Summer Research Project on Artificial Intelligence, is held on the Dartmouth College campus. Five attendees of the original conference in 1956 were present at the anniversary--John McCarthy, Marvin Minsky, Trenchard More, Oliver Selfridge and Ray Solomonoff. The coining of the term “Artificial Intelligence” was credited to the proposal for the original conference, which is viewed as the founding event of AI.


Checkers is Solved

Checkers Championship where Chinook checkers program faced human competitors at The Computer Museum, Boston

An article is published titled Checkers is Solved in a September issue of the journal Science. The article stated, “Perfect play by both sides leads to a draw.” The team that conducted the research was led by Professor Jonathan Schaeffer at the University of Calgary who had been working to solve the checkers problem since 1989. In the course of their work the team created a checkers program called “CHINOOK”, which played successfully in several man-machine competitions, including one held at The Computer Museum in Boston in 1994.


IBM’s Watson defeats Jeopardy! contestants

(L to R) Alex Trebek, Ken Jennings, IBM’s Watson, and Brad Rutter on Jeopardy!

In 2010, IBM’s Watson spars against former Jeopardy! Tournament of Champion contestants and finishes with a 71% winning percentage. This was preparation for a 2011 matchup where Watson would defeat two former human Jeopardy! champions. In the televised exhibition match, Watson handily defeated two of the all-time best Jeopardy! players, Ken Jennings and Brad Rutter, by analyzing natural language questions and content more accurately and faster than its human counterparts.


Siri is Announced

Siri interface

Siri is introduced as a built-in feature with the Apple iPhone 4S smartphone in October. A voice-activated personal assistant, Siri could “understand” natural language requests and also adjust the information it retrieved from the web by learning user tendencies and preferences. Siri could perform a wide number of functions – from recommending local restaurants (using the web and the iPhone’s built-in GPS navigation system), providing walking or driving directions, giving weather forecasts, showing current sports scores, and even answering seemingly meaningless questions like, “Who is your favorite NCAA college football team?” Although the program’s “voice” was female by default, it could be changed to a man’s voice.


Gates Joins Musk, Hawking in Expressing Fear of AI

Bill Gates

Microsoft co-founder Bill Gates joins a number of prominent tech gurus and scientists in revealing his thoughts on the potentially dangerous effects and unintended consequences of artificial intelligence on human civilization. Previously, Elon Musk, Stephen Hawking, and others had expressed similar sentiments. Those on the other side of the debate felt artificial intelligence would usher in an era of unprecedented human achievement, aided by the “minds” of humanity’s artificial brethren. While Gates and others felt that in the short-term intelligent machines would benefit mankind, they foresaw a future where more advanced super-intelligent machines could pose a grave threat to human existence.

Amazon Kindle

The Amazon Kindle is released

Minsky’s Tentacle Arm

The Tentacle Arm

Osborne I

Osborne 1 introduced

MOS 6502 ad from IEEE Computer, Sept. 1975

MOS 6502 is introduced

PlayStation game console

Sony releases the PlayStation in North America