Chronos Digital Game Clock
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 It is manufactured by DCI of Mountain View, California, and is a popular clock for blitz chess games played over-the-board. It is composed of a digital logic board, housed in a metal casing with two LCDs and three buttons: one used to turn the clock on and change the mode, and two used during play to signal the end of a turn.
- "Manual for the Chronos Digital Game Clock" (PDF). ChronosDealer.com. Retrieved 25 June 2011.
- Nm Peter Julius Aravena Sloan; Peter Julius Aravena Sloan; Anda Aravena (3 January 2012). NY Chess Since 1972. Sloans Book Press. pp. 60–. ISBN 978-1-4609-6141-4. Retrieved 16 June 2012.
- J. C. Hallman (14 November 2004). The Chess Artist: Genius, Obsession, And The World's Oldest Game. Macmillan. pp. 50–. ISBN 978-0-312-33396-6. Retrieved 16 June 2012.
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