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Whirlwind (computer)
Whirlwind I was a Cold War-era List of vacuum-tube computers, vacuum-tube computer developed by the Massachusetts Institute of Technology, MIT Servomechanisms Laboratory for the United States Navy, U.S. Navy. Operational in 1951, it was among the first digital electronic computers that operated in real-time for output, and the first that was not simply an electronic replacement of older mechanical systems. It was one of the first computers to calculate in Bit-level parallelism, bit-parallel (rather than serial computer, bit-serial), and was the first to use magnetic-core memory. Its development led directly to the Whirlwind II design used as the basis for the United States Air Force Semi-Automatic Ground Environment, SAGE air defense system, and indirectly to almost all business computers and minicomputers in the 1960s, particularly because of the mantra "short word length, speed, people." Background During World War II, the United States Navy, U.S. Navy's Naval Research Lab app ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetic-core Memory
In computing, magnetic-core memory is a form of random-access memory. It predominated for roughly 20 years between 1955 and 1975, and is often just called core memory, or, informally, core. Core memory uses toroids (rings) of a hard magnetic material (usually a Ferrite (magnet)#Semi-hard ferrites, semi-hard ferrite). Each core stores one bit of information. Two or more wires pass through each core, forming an X-Y array of cores. When an electrical current above a certain threshold is applied to the wires, the core will become magnetized. The core to be assigned a value – or ''written'' – is selected by powering one X and one Y wire to half of the required current, such that only the single core at the intersection is written. Depending on the direction of the currents, the core will pick up a clockwise or counterclockwise magnetic field, storing a 1 or 0. This writing process also causes electricity to be electromagnetic induction, induced into nearby wires. If t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flight Simulator
A flight simulator is a device that artificially re-creates aircraft flight and the environment in which it flies, for pilot training, design, or other purposes. It includes replicating the equations that govern how aircraft fly, how they react to applications of flight controls, the effects of other aircraft systems, and how the aircraft reacts to external factors such as air density, turbulence, wind shear, cloud, precipitation, etc. Flight simulation is used for a variety of reasons, including flight training (mainly of pilots), the design and development of the aircraft itself, and research into aircraft characteristics and control handling qualities. The term "flight simulator" may carry slightly different meaning in general language and technical documents. In past regulations, it referred specifically to devices which can closely mimic the behavior of aircraft throughout various procedures and flight conditions. In more recent definitions, this has been named "full fli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Everett (computer Scientist)
Robert Rivers Everett (June 26, 1921 – August 15, 2018) was an American computer scientist. He was an honorary board member of the MITRE Corporation. He was born in Yonkers, New York Yonkers () is the List of municipalities in New York, third-most populous city in the U.S. state of New York (state), New York and the most-populous City (New York), city in Westchester County, New York, Westchester County. A centrally locate .... In 1945 he worked with Jay Forrester on the Whirlwind project, one of the first real time electronic computers. In 1958 he was a founding member of the MITRE Corporation, and was its president from 1969 to 1986. In 1983 he received the Medal for Distinguished Public Service from the Department of Defense and in 1989 he received the National Medal of Technology. In 2009, he was named the winner of the 2008 Eugene G. Fubini Award for outstanding contributions to the Department of Defense (DoD). In 2009, he was also made a Fellow of the Compu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Batch Mode
Batch may refer to: Food and drink * Batch (alcohol), an alcoholic fruit beverage * Batch loaf, a type of bread popular in Ireland * A dialect term for a bread roll used in North Warwickshire, Nuneaton and Coventry, as well as on the Wirral, England * Small batch, bourbon whiskey blended from selected barrels * Wiser's Small Batch, a Canadian whisky made in limited batches by Corby Distillery Ltd, Belleville, Ontario, Canada Manufacturing and technology * Batch distillation, the use of distillation in batches * Batch oven, a furnace used for thermal processing * Batch production, a manufacturing technique * Batch reactor, a type of vessel widely used in the process industries * Fed-batch, a biotechnological batch process * Glass batch calculation, the determination of the correct mix of raw materials for a glass melt * Sequencing batch reactor, an industrial processing tank for the treatment of wastewater * Batching & mixing plants, used in concrete production Computer sc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Program
A computer program is a sequence or set of instructions in a programming language for a computer to Execution (computing), execute. It is one component of software, which also includes software documentation, documentation and other intangible components. A ''computer program'' in its human-readable form is called source code. Source code needs another computer program to Execution (computing), execute because computers can only execute their native machine instructions. Therefore, source code may be Translator (computing), translated to machine instructions using a compiler written for the language. (Assembly language programs are translated using an Assembler (computing), assembler.) The resulting file is called an executable. Alternatively, source code may execute within an interpreter (computing), interpreter written for the language. If the executable is requested for execution, then the operating system Loader (computing), loads it into Random-access memory, memory and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ENIAC
ENIAC (; Electronic Numerical Integrator and Computer) was the first Computer programming, programmable, Electronics, electronic, general-purpose digital computer, completed in 1945. Other computers had some of these features, but ENIAC was the first to have them all. It was Turing-complete and able to solve "a large class of numerical problems" through reprogramming. ENIAC was designed by John Mauchly and J. Presper Eckert to calculate artillery external ballistics, firing tables for the United States Army's Ballistic Research Laboratory (which later became a part of the United States Army Research Laboratory, Army Research Laboratory). However, its first program was a study of the feasibility of the thermonuclear weapon. ENIAC was completed in 1945 and first put to work for practical purposes on December 10, 1945.* ENIAC was formally dedicated at the University of Pennsylvania on February 15, 1946, having cost $487,000 (), and called a "Giant Brain" by the press. It had ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perry O
Perry or pear cider is an alcoholic beverage made from fermented pears, traditionally in England (particularly Gloucestershire, Herefordshire, and Worcestershire), parts of South Wales, France (especially Normandy and Anjou), Canada, Australia, and New Zealand. There is growing interest in artisanal perry production in the fruit-growing regions of the northwest United States. Perry typically has an alcohol content ranging from 5% to 9% ABV. Production Fruit The pears used to make perry are typically not the large, sweet varieties eaten as fresh fruit. Perry pears tend to be small and relatively the distinction between table pears and perry pears is similar to the distinction between table apples and cider apples. Perry pears are thought to be descended from wild hybrids, known as ''wildings'', between the cultivated pear ''Pyrus communis'' subsp. ''communis'' and the now-rare wild pear ''Pyrus communis'' subsp. ''pyraster''. The cultivated pear ''P. communis'' was brought t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Judy Clapp
Judith A. Clapp (born 1930) is a computer scientist who began her career at the Massachusetts Institute of Technology (MIT) and subsequently moved to the Lincoln Laboratory and then to MITRE, where she was a leader in the Semi-Automatic Ground Environment (SAGE) military project, including the development of the SAGE computer. Early life and education Clapp was born in 1930 and was raised in Long Island, New York. She received her bachelor's degree in math and physics in 1951 from Smith College and her master's degree in applied science (which she described as the closest match to computer science available at the time) in 1952 from Radcliffe College, then a women's affiliate of Harvard University. Career After graduating from Radcliffe, Clapp began work at MIT, the only woman among the early programmers of the Whirlwind I, the first real-time computer. The Whirlwind, a vacuum tube computer, had originally been commissioned by the United States Navy but was subsequently finance ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Analog Computer
An analog computer or analogue computer is a type of computation machine (computer) that uses physical phenomena such as Electrical network, electrical, Mechanics, mechanical, or Hydraulics, hydraulic quantities behaving according to the mathematical principles in question (''analog signals'') to Scientific modelling, model the problem being solved. In contrast, digital computers represent varying quantities symbolically and by discrete values of both time and amplitude (digital signals). Analog computers can have a very wide range of complexity. Slide rules and nomograms are the simplest, while naval gunfire control computers and large hybrid digital/analog computers were among the most complicated. Complex mechanisms for process control and protective relays used analog computation to perform control and protective functions. Analog computers were widely used in scientific and industrial applications even after the advent of digital computers, because at the time they were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jay Forrester
Jay Wright Forrester (July 14, 1918 – November 16, 2016) was an American computer engineer, management theorist and systems scientist. He spent his entire career at Massachusetts Institute of Technology, entering as a graduate student in 1939, and eventually retiring in 1989. During World War II Forrester worked on servomechanisms as a research assistant to Gordon S. Brown. After the war he headed MIT's Whirlwind digital computer project. There he is credited as a co-inventor of magnetic core memory, the predominant form of random-access computer memory during the most explosive years of digital computer development (between 1955 and 1975). It was part of a family of related technologies which bridged the gap between vacuum tubes and semiconductors by exploiting the magnetic properties of materials to perform switching and amplification. His team is also believed to have created the first animation in the history of computer graphics, a "jumping ball" on an oscilloscope. L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Project Cyclone
Project Cyclone was a 20-year initiative of the US Office of Naval Research that lasted from 1946 to the mid-1960s. It was one of a series of projects whose purpose was to develop a computer laboratory with a company in the private sector that would do research and development on missile systems, as well as on classified problems in navigation, ballistics, engine control, electrical circuit analysis, and other fields. A secondary motivation was to strengthen the US's connections with civilian scientists and technology companies that had developed during WWII. Project Cyclone was a partnership with Reeves Instrument Corporation. There were two sister projects: Project Whirlwind, which was a partnership with the Massachusetts Institute of Technology to build a digital computer (resulting in the Whirlwind I), and Project Typhoon, which was a partnership to build an analog computer with RCA. The project led to the development of the original Reeves Electronic Analog Computer (or "REA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Office Of Naval Research
The Office of Naval Research (ONR) is an organization within the United States Department of the Navy responsible for the science and technology programs of the U.S. Navy and Marine Corps. Established by Congress in 1946, its mission is to plan, foster, and encourage scientific research to maintain future naval power and preserve national security. It carries this out through funding and collaboration with schools, universities, government laboratories, nonprofit organizations, and for-profit organizations, and overseeing the Naval Research Laboratory, the corporate research laboratory for the Navy and Marine Corps. NRL conducts a broad program of scientific research, technology and advanced development. ONR's headquarters is in the Ballston neighborhood of Arlington County, Virginia. ONR Global has offices overseas in Santiago, São Paulo São Paulo (; ; Portuguese for 'Paul the Apostle, Saint Paul') is the capital of the São Paulo (state), state of São Paulo, as well a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
