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A vacuum-tube computer, now termed a first-generation computer, is a computer that uses vacuum tubes for logic circuitry. While the history of mechanical aids to computation goes back centuries, if not millennia, the history of vacuum tube computers is confined to the middle of the 20th century. Lee De Forest invented the triode in 1906.
YD1336 – 1.8 kW, Air-cooled, UHF power triode. YD1342 – 30 MHz, 530 kW, Water-cooled RF power triode. YD1352S (8867, DX334) – 5 MHz, 2 kW, Water-cooled Neotron, a gridless field-effect tube where a magnetically focused electron beam is modulated by varying the voltage of a gate electrode surrounding it.
A vacuum tube, electron tube, [ 1][ 2][ 3] valve (British usage), or tube (North America) [ 4] is a device that controls electric current flow in a high vacuum between electrodes to which an electric potential difference has been applied. The type known as a thermionic tube or thermionic valve utilizes thermionic emission of electrons from a ...
Sylvania Electric Products. Sylvania Electric Products Inc. was an American manufacturer of diverse electrical equipment, including at various times radio transceivers, vacuum tubes, semiconductors, and mainframe computers such as MOBIDIC. They were one of the companies involved in the development of the COBOL programming language.
Elmer Tiling Cunningham (September 1, 1889 – June 14, 1965) was an American entrepreneur and businessman, specializing in vacuum tubes and radio manufacturing. He is best known for being the most successful business person to produce counterfeit (AKA bootleg) or unlicensed vacuum tubes (1915-1920). Cunningham was in direct violation by ...
There’s some research that suggests red wine might be the best choice for people who want to drink occasionally. In fact, Pabla says, some small studies have found that 1 to 3 grams of red wine ...
Arthur Morris Blank (born September 27, 1942) is an American businessman.He is best known for being a co-founder of the home improvement retailer The Home Depot. [2]Blank owns two professional sports teams based in Atlanta, Georgia – the Atlanta Falcons of the National Football League (NFL) and Atlanta United FC of Major League Soccer (MLS), the latter of which won the 2018 MLS Cup [3 ...
$25 from Home Depot Shop Now Available on eBay. Based in Rockford, Illinois, Estwing been designing and making hammers, axes, specialty tools, and pry bars since 1923. The company is well known ...