Cathode-ray tube amusement device

The Cathode-ray tube amusement device is the earliest known interactive electronic game and was, or can at least be theoretically considered, a handheld electronic game, as well as the first known instance of a video game device. The brainchild of Thomas T. Goldsmith, Jr. and Estle Ray Mann (the latter of which is not eponymous with the device), the Cathode-ray tube amusement device used a cathode-ray tube and an oscilloscope to create a basic and fairly rudimentary game through electric responses. The device simulates an artillery shell arcing towards targets on the cathode-ray tube screen, which is controlled by the player by adjusting knobs to change the trajectory of a CRT beam spot on the display in order to reach plastic targets overlaid on the screen. The device was built using analog electronics, and was constructed in 1947, with the patent filed and accepted in 1948. Only one was ever built, and it never went into commercial use, and the only one prototype ever existed. It can be considered the first video game, although given the lack of a computing device, it is often mentioned, but not credited, as such. It didn't have any marked effect on the video game industry as a whole.
==History==
The cathode-ray tube amusement device was invented by physicists Thomas T. Goldsmith, Jr. and Estle Ray Mann. The pair worked at television designer DuMont Laboratories specializing in the development of cathode ray tubes that used electronic signal outputs to project a signal onto television screens. Goldsmith, who had received a Ph.D. in physics from Cornell University in 1936 with a focus on oscilloscope design, was at the time of the device's invention the director of research for DuMont Laboratories in New Jersey. The two inventors were inspired by the radar displays used in World War II, which Goldsmith had worked on during the war. The patent for the device was filed on January 25, 1947 and issued on December 14, 1948. The patent, the first for an electronic game, was never used by either the inventors or DuMont Laboratories, and the device was never manufactured beyond original handmade prototype. Institute of Electrical and Electronics Engineers historian Alex Magoun has speculated that Goldsmith did not make the prototype with the intent for it to be the basis of any future production, but only designed the device as a demonstration of the kind of commercial opportunities DuMont could pursue. Goldsmith did not work on games after the invention of the device; he was promoted to vice president in 1953 and left DuMont—by then split up and sold to other firms—to become a professor of physics at Furman University in 1966. Goldsmith kept the device and brought it with him to Furman; in a 2016 interview fellow physics professor Bill Brantley recalled Goldsmith demonstrating the game to him.
Despite being a game that used a graphical display, the cathode-ray tube amusement device is generally not considered under most definitions to be a candidate for the first video game, as it used purely analog hardware and did not run on a computing device; some loose definitions may still consider it a video game, but it is still usually disqualified as the device was never manufactured. Nevertheless, it is the earliest known interactive electronic game as well as the first to incorporate an electronic display, thus making it a forerunner to other games in the early history of video games. As the device was never manufactured or widely shown, however, it did not directly inspire any other games and had no impact on the future video game industry.
==Gameplay==
The cathode-ray tube amusement device consists of a cathode ray tube connected to an oscilloscope with a set of knobs and switches. The device uses purely analog electronics and does not use any digital computer or memory device or execute a program. The CRT projects a spot on the oscilloscope display screen, which traces a parabolic arc across the screen when a switch is activated by the player. This beam spot represents the trajectory of an artillery shell. Overlaid on the screen are transparent plastic targets representing objects such as airplanes. At the end of the spot's trajectory, the beam defocuses, resulting in the spot expanding and blurring. This represents the shell exploding as if detonated by a artillery fuze. The goal of the game is to have the beam defocus when it is within the bounds of a target. Prior to the beam spot beginning its arc, the player can turn the control knobs to direct the beam spot's trajectory and adjust the delay of the shell burst. The machine can be set to fire a "shell" either once or at a regular interval, which is adjustable by the player. This gives the player the goal of hitting one of the overlay targets with the shell burst within a time limit. The player was recommended to make the trajectory far removed from a straight line "so as to require an increased amount of skill and care".
==Trivia==
*It is possible to recreate the device through digital programs and modern 21st century video game technology.
*It is unknown what happened to the original device itself. No record of its location or status is listed.
*The Cathode-ray tube amusement device is often incorrectly called the "grandfather of video games". Whilst it was one of the earliest known forms of electronic entertainment, it did not use a video signal and nor did it use computing capability, therefore making it an electronic game, not a video game.
*The CRT amusement device was heavily inspired and influenced by WWII radar.
*Its gameplay is very reminiscent of Missile Command and of traditional Shoot 'em up games.
==Gallery==
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