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Drum memory was a magnetic data storage device invented by Gustav Tauschek in 1932 in Austria. [ 1 ] [ 2 ] Drums were widely used in the 1950s and into the 1960s as computer memory . Many early computers, called drum computers or drum machines, used drum memory as the main working memory of the computer. [ 3 ]
The Yvonne A. Ewell Townview Magnet Center (TMC) is a magnet school in East Oak Cliff, Dallas, Texas, United States. The school names reflects the view of downtown Dallas. [2] TMC is a three-story building campus that houses six independent magnet high schools in the Dallas Independent School District. The six component schools are:
The School for the Talented and Gifted at the Yvonne A. Ewell Townview Magnet Center (commonly referred to as TAG or TAG Magnet) is a public college preparatory magnet secondary school located in the Oak Cliff area of Dallas, Texas. The school enrolls students in grades 9-12 and is a part of the Dallas Independent School District.
This page was last edited on 26 October 2010, at 09:13 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
Yvonne A. Ewell Townview Magnet Center, which houses this school. The School of Science and Engineering Magnet (known as the School of Science and Engineering or SEM) is a magnet college preparatory high school located in the Yvonne A. Ewell Townview Magnet Center, home of six magnet high schools in the Dallas Independent School District.
The IBM 650 Magnetic Drum Data-Processing Machine is an early digital computer produced by IBM in the mid-1950s. [ 2 ] [ 3 ] It was the first mass-produced computer in the world. [ 4 ] [ 5 ] Almost 2,000 systems were produced, the last in 1962, [ 6 ] [ 7 ] and it was the first computer to make a meaningful profit. [ 7 ]
A conducting drum spun from above in the field of a "loudspeaker" type of magnet that has one pole in the center of the drum and the other pole surrounding the drum could use conducting ball bearings at the top and bottom of the drum to pick up the generated current.
The SDS-3 featured four drum channels and a noise generator; [2] [3] the SDS-4 was a functionally similar two-channel version. [3] At this juncture, the drum pads were round, with wooden frames and real 8-inch drum heads. [4] Musicaid was also the distributor for the Lyricon wind synthesizer as played by John L. Walters of Landscape.
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