Ads
related to: rca vh240r ebay shop vacuum
Search results
Results From The WOW.Com Content Network
The Selectron was an early form of digital computer memory developed by Jan A. Rajchman and his group at the Radio Corporation of America (RCA) under the direction of Vladimir K. Zworykin. It was a vacuum tube that stored digital data as electrostatic charges using technology similar to the Williams tube storage device.
This is a list of vacuum tubes or thermionic valves, and low-pressure gas-filled tubes, or discharge tubes. Before the advent of semiconductor devices, thousands of tube types were used in consumer electronics.
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).
RCA manufactured equipment, such as oscilloscopes, for repairing radios, RCA Graphic Systems Division (GSD) was an early supplier of electronics designed for the printing and publishing industries. It contracted with German company Rudolf Hell to market adaptations of the Digiset photocomposition system as the Videocomp, and a Laser Color ...
Although RCA was noted for their pioneering work in transistors, RCA decided to build a vacuum tube computer instead of a transistorized computer. [1] It was the largest vacuum tube computer of its time in 1956, occupying 20,000 sq ft (1,900 m 2 ) of floor space with up to 30,000 tubes, 70,000 diodes , and 35,000 magnetic cores . [ 2 ]
Vacuum tube computer with magnetostrictive delay line memory intended for office usage. Second oldest surviving computer in the world. [21] SILLIAC: 1956 1: Built at the University of Sydney, based on the ILLIAC and ORDVAC RCA BIZMAC: 1956 6: RCA's first commercial computer, it contained 25,000 tubes Ural series: 1956–1964 Ural-1 to Ural-4 ...