Cathode Ray Tube Amusement Device

From Wikipedia, the free encyclopedia
  (Redirected from Cathode ray tube amusement device)
Jump to: navigation, search
Circuitry schematic of the Cathode Ray Tube Amusement Device, patented in 1948

The cathode ray tube amusement device is the earliest known interactive electronic game to use a cathode ray tube (CRT). Thomas T. Goldsmith Jr. and Estle Ray Mann constructed the game from analog electronics in 1947.[1] The gaming device was never marketed or sold to the public,[2] but was patented in 1948.[3]

The cathode ray tube amusement device is a device that records and controls the quality of an electronic signal. The strength of the electronic signals produced by the amusement device is controlled by knobs which influences the trajectory of the CRT's light beam. The device is purely electromechanical and does not use any memory device, computer, or programming.[4]


The player turns a control knob to position the CRT beam on the screen; to the player, the beam appears as a dot, which represents a reticle or scope. The player has a restricted amount of time in which to maneuver the dot so that it overlaps an airplane, and then to fire at the airplane by pressing a button. If the beam's gun falls within the predefined mechanical coordinates of a target when the user presses the button, then the CRT beam defocuses, simulating an explosion.[3]

See also[edit]


  1. ^ U.S. Patent #2,455,992
  2. ^ Classic Games at
  3. ^ a b US Patent 2455992
  4. ^ DS Cohen. "Cathode-Ray Tube Amusement Device". Retrieved 29 May 2012. 

External links[edit]