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OXO played in an EDSAC emulator for System 6/System 7 running in Classic in Mac OS X v10.4.3.
|Genre(s)||Traditional game and Paper and pencil game|
|Media/distribution||Delay line memory|
OXO was a computer game written for the EDSAC computer in 1952, an implementation of the game known as Noughts and Crosses in the UK, or tic-tac-toe in the United States. It was written by Alexander S. Douglas as an illustration for his Ph.D. thesis on human-computer interaction for the University of Cambridge. OXO was the first digital graphical game to run on a computer.
The simulation was played using a rotary telephone controller. OXO is often listed as the first computer game.
In OXO the player played against the computer, and output was displayed on the computer's 35×16 dot matrix cathode ray tube. The source code was short, yet it played a perfect game of noughts and crosses. OXO did not have widespread popularity because the EDSAC was a computer unique to Cambridge.
See also 
- "A.S.Douglas' 1952 Noughts and Crosses game". Pong-Story. Retrieved 2013-05-21.
- Edsac Simulator: An emulator of the EDSAC, including the code for OXO
- PONG-Story: A.S. Douglas' 1952 Noughts and Crosses game
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