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for+storing+bits

  • 1 core

    [kɔ:ʳ, Am kɔ:r] n
    1) ( centre) of apple, pear Kernhaus nt, Kerngehäuse nt geol; of rock Innere[s] nt; of planet Mittelpunkt m; nucl ( of reactor) [Reaktor]kern m;
    to be rotten to the \core völlig verfault sein
    2) ( central group) people Kern m;
    the hard \core der harte Kern ( fam)
    3) (fig: central part) Kern m;
    to get to the \core of a matter/ issue zum Kern einer Angelegenheit/eines Problems vordringen;
    to be conservative/ arrogant/a patriot to the \core durch und durch konservativ/arrogant/Patriot sein;
    to be rotten to the \core bis ins Mark verdorben sein, durch und durch schlecht sein;
    to be shocked to the \core bis ins Mark erschüttert sein
    4) ( bore sample) Bohrprobe f
    5) elec ( of cable) Leiter m
    attr, inv (activity, message) Haupt-;
    the \core issue die zentrale Frage, der zentrale Punkt vt
    to \core fruit Früchte entkernen;
    peel and \core the apples die Äpfel schälen und das Kerngehäuse entfernen [o ausschneiden]

    English-German students dictionary > core

  • 2 Forrester, Jay Wright

    [br]
    b. 14 July 1918 Anselmo, Nebraska, USA
    [br]
    American electrical engineer and management expert who invented the magnetic-core random access memory used in most early digital computers.
    [br]
    Born on a cattle ranch, Forrester obtained a BSc in electrical engineering at the University of Nebraska in 1939 and his MSc at the Massachusetts Institute of Technology (MIT) in Cambridge, Massachusetts, where he remained to teach and carry out research. Becoming interested in computing, he established the Digital Computer Laboratory at MIT in 1945 and became involved in the construction of Whirlwind I, an early general-purpose computer completed in March 1951 and used for flight-simulation by the US Army Air Force. Finding the linear memories then available for storing data a major limiting factor in the speed at which computers were able to operate, he developed a three-dimensional store based on the binary switching of the state of small magnetic cores that could be addressed and switched by a matrix of wires carrying pulses of current. The machine used parallel synchronous fixed-point computing, with fifteen binary digits and a plus sign, i.e. 16 bits in all, and contained 5,000 vacuum tubes, eleven semiconductors and a 2 MHz clock for the arithmetic logic unit. It occupied a two-storey building and consumed 150kW of electricity. From his experience with the development and use of computers, he came to realize their great potential for the simulation and modelling of real situations and hence for the solution of a variety of management problems, using data communications and the technique now known as interactive graphics. His later career was therefore in this field, first at the MIT Lincoln Laboratory in Lexington, Massachusetts (1951) and subsequently (from 1956) as Professor at the Sloan School of Management at the Massachusetts Institute of Technology.
    [br]
    Principal Honours and Distinctions
    National Academy of Engineering 1967. George Washington University Inventor of the Year 1968. Danish Academy of Science Valdemar Poulsen Gold Medal 1969. Systems, Man and Cybernetics Society Award for Outstanding Accomplishments 1972. Computer Society Pioneer Award 1972. Institution of Electrical Engineers Medal of Honour 1972. National Inventors Hall of Fame 1979. Magnetics Society Information Storage Award 1988. Honorary DEng Nebraska 1954, Newark College of Engineering 1971, Notre Dame University 1974. Honorary DSc Boston 1969, Union College 1973. Honorary DPolSci Mannheim University, Germany. Honorary DHumLett, State University of New York 1988.
    Bibliography
    1951, "Data storage in three dimensions using magnetic cores", Journal of Applied Physics 20: 44 (his first description of the core store).
    Publications on management include: 1961, Industrial Dynamics, Cambridge, Mass.: MIT Press; 1968, Principles of Systems, 1971, Urban Dynamics, 1980, with A.A.Legasto \& J.M.Lyneis, System Dynamics, North Holland. 1975, Collected Papers, Cambridge, Mass.: MIT.
    Further Reading
    K.C.Redmond \& T.M.Smith, Project Whirlwind, the History of a Pioneer Computer (provides details of the Whirlwind computer).
    H.H.Goldstine, 1993, The Computer from Pascal to von Neumann, Princeton University Press (for more general background to the development of computers).
    Serrell et al., 1962, "Evolution of computing machines", Proceedings of the Institute of
    Radio Engineers 1,047.
    M.R.Williams, 1975, History of Computing Technology, London: Prentice-Hall.
    KF

    Biographical history of technology > Forrester, Jay Wright

  • 3 double-density disk

    A disk created to hold data at twice the density (bits per inch) of a previous generation of disks. Early IBM PC floppy disks held 180 KB of data. Double-density disks increased that capacity to 360 KB. Double-density disks use modified frequency modulation encoding for storing data.

    English-Arabic terms dictionary > double-density disk

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