OXO (or Noughts and Crosses) is a tic-tac-toe computer game made for the EDSAC computer in 1952. It was written by A.S. (Sandy) Douglas as an illustration for his Ph.D. thesis on human-computer interaction for the University of Cambridge. OXO is the first known (graphical) game to run on a computer. Tic-tac-toe, also called noughts and crosses and many other names, is a paper and pencil game between two players, O and X, who alternate in marking the spaces in a 3×3 board. ... Tic-tac-toe, also called noughts and crosses and many other names, is a paper and pencil game between two players, O and X, who alternate in marking the spaces in a 3×3 board. ... A computer game is a game composed of a computer-controlled virtual universe that players interact with in order to achieve a defined goal or set of goals. ... EDSAC (Electronic Delay Storage Automatic Computer) was an early British computer. ... Jump to: navigation, search 1952 was a leap year starting on Tuesday (link will take you to calendar). ... Jump to: navigation, search Doctor of Philosophy (Ph. ... Jump to: navigation, search The University of Cambridge is the second-oldest university in the English-speaking world, with one of the most selective sets of entry requirements in the United Kingdom. ...

The player plays against the computer and output was displayed on the computer's 35×16 pixel cathode ray tube. The source code is short, yet plays a perfect game of noughts and crosses. OXO did not have widespread popularity because the EDSAC was a computer unique to Cambridge. Jump to: navigation, search A pixel (pix, 1932 abbreviation of pictures, coined by Variety headline writers + element) is one of the many tiny dots that make up the representation of a picture in a computers memory. ... Jump to: navigation, search Cathode ray tube employing electromagnetic focus and deflection Cutaway rendering of a color CRT The cathode ray tube or CRT, invented by Karl Ferdinand Braun, is the display device used in most computer displays, video monitors, televisions and oscilloscopes. ... Source code (commonly just source or code) is any series of statements written in some human-readable computer programming language. ...

External links

• Edsac Simulator: An emulator of the EDSAC, including the code for OXO
• PONG-Story: A.S. Douglas' 1952 Noughts and Crosses game