Cathode Ray Tube Amusement Device


Cathode Ray Tube Amusement Device   (Cathode Ray Tube and analog electronics  1947


No screenshot of the device exist.

No Screenshot of the gameplay exist.


Game is lost.


First game ever, first simulator


Silent, monochrome game.

Cathode Ray Tube Amusement Device
Cathode Ray Tube Amusement Device


1) Simulate a missile firing at a target. Game uses joystick, 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.
A game in which a player controls the CRT's electron gun much like an Etch A Sketch. The beam from the gun is focused at a single point on the screen to form a dot representing a missile, and the player tries to control the dot to hit paper targets put on the screen, with all hits detected mechanically. By connecting a cathode ray tube to an oscilloscope and devising knobs that controlled the angle and trajectory of the light traces displayed on the oscilloscope, they were able to invent a missile game that, when using screen overlays, created the effect of firing missiles at various targets, exploding target ( defocusing ray beam on CRT).

Easiest way to understand how it looks like - watch the screenshot of "Game & Watch"  system by Nintendo - it may looks something similar (but very primitive of course in comparision).

2) The cathode ray tube (CRT)-  is a vacuum tube containing one or more electron guns, and a phosphorescent screen used to view images.It has a means to accelerate and deflect the electron beam(s) onto the screen to create the images. The images may represent electrical waveforms (oscilloscope), pictures (television, computer monitor), radar targets or others. CRTs have also been used as memory devices, in which case the visible light emitted from the fluorescent material (if any) is not intended to have significant meaning to a visual observer (though the visible pattern on the tube face may cryptically represent the stored data).

3) Analogue electronics  are electronic systems with a continuously variable signal, in contrast to digital electronics (Spacewar! (1961) where signals usually take only two levels. The term "analogue" describes the proportional relationship between a signal and a voltage or current that represents the signal.
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