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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 ]
FASTRAND was a magnetic drum mass storage system built by Sperry Rand Corporation (later Sperry Univac) for their UNIVAC 1100 series and 418/490/494 series computers. A FASTRAND subsystem consisted of one or two Control Units and up to eight FASTRAND units.
The radiodrum works in a similar way to the theremin, which uses magnetic capacitance to locate the position of the drumsticks. The two mallets act as antennas transmitting on slightly different frequencies and the drum surface acts as a set of antennas. The combination of the antenna signals is used to derive X, Y and Z.
Recycling centres use magnetic separation often to separate components from recycling, isolate metals, and purify ores. [1] Overhead magnets, magnetic pulleys, and the magnetic drums were the methods used in the recycling industry. [1] Magnetic separation is also useful in mining iron as it is attracted to a magnet. [3]
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 ]
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First things first, just about every household in the ‘80s had a shelf full of board games. But there was one common denominator you could find on nearly every one of those shelves: Trivial Pursuit.
This category includes devices and components which use near-field magnetism, but excludes radio devices such as antennas. Subcategories This category has the following 7 subcategories, out of 7 total.