Browsing Project Whirlwind Reports by Title

Now showing items 472-491 of 1719

    • Core Drivers - Model V and Model VI Applications, Limitations, and Modifications 

      Oken, Stanley (Lincoln Laboratory - Division 6, 1954-03-20)
      A transistorized core driver, employing one point-contact and one junction transistor, which can drive the equivalent of about 200 metallic magnetic memory cores in series is discussed in detail. A current output of 12 ma ...

    • Core Drivers - Model V and Model VI Applications, Limitations, and Modifications 

      Childress, J. D. (Lincoln Laboratory - Division 6, 1954-04-01)
      (This memorandum supersedes Engineering Note E-523.¹) The Model V and Model VI Core Drivers are standard test units which generate rectangular wave current pulses of variable amplitude, rise time, and duration. Model V ...

    • Core Drivers — Model V and Model VI 

      Boyd, Harold W. (MIT Digital Computer Laboratory, 1953-02-10)
      The Model V and Model VI Core Drivers are standard test units which can deliver rectangular wave current pulses of variable amplitude, rise time, and duration. Model V supplies negative-going pulses, whereas Model VI ...

    • Core Memory Using External Bit Selection 

      Raffel, J. (Lincoln Laboratory - Division 6, 1954-03-18)
      A memory system in which the memory functions (remanence) and the selection function (nonlinearity) are performed in separate cores may have the following advantages over the present (coincident-current) system: 1) Much ...

    • Correspondence; MIT and Sylvania on WWI Design 

      Fahnestock, H. (MIT Servomechanisms Laboratory, 1948-10-01)
      List of memoranda on correspondence between M.I.T. research teams and Sylvania on Whirlwind I design.

    • Cost and Personnel Supplement 

      Boyd, H. R. (MIT Servomechanisms Laboratory, 1949-07-20)
      Report on the costs and personnel breakdowns for Contract N5ori-60 for fiscal 1950.

    • Cost Trends, Contract N5ori-60 

      Forrester, Jay W. (MIT Servomechanisms Laboratory, 1948-11-19)
      Report on the actual past and estimated future costs of Project Whirlwind.

    • The cryotron - a superconductive computer component 

      Buck, Dudley A. (Lincoln Laboratory - Division 6, 1955-08-22)
      Tne study of nonlinearities in nature suitable for computer use has led to the cryotron, a device based on the destruction of superconductivity by a magnetic field. The cryotron, in its simplest form, consists of a straight ...

    • Current Status of Basic Circuit Work 

      Heineck, Arthur W. (Lincoln Laboratory - Division 6, 1953-08-21)
      This note contains most of the important points discussed at a Joint meeting of the IBM-MIT circuit design groups on August 19, 1953. The main points made at the meeting were: a. High-Speed Flip-Flop: The only remaining ...

    • Data Storage in Three Dimensions 

      Forrester, Jay W. (MIT Servomechanisms Laboratory, 1947-04-29)
      Memorandum from the Servomechanisms Laboratory research teams on data storage in three dinensions.

    • Delta ns In Ceramic Array #1 

      Guditz, E. A. (MIT Digital Computer Laboratory, 1952-10-14)
      It is possible to obtain two values of output voltage from a half-selected memory core depending on whether it holds a ONE or a ZERO. This fact places a limit on the size of a memory plane or, more specifically, the number ...

    • Description of Memory Test Setup VI 

      Guditz, E. A. (Lincoln Laboratory - Division 6, 1954-10-11)
      Memory Test Setup VI is an assembly of Burroughs' test equipment designed to simulate computer operation of magnetic-core memories. It makes possible the dynamic testing and evaluation of both single memory planes and ...

    • Design and Construction Schedule, WWII Prototype 

      Kromer, A. P.; Mayer, Rollin P.; Taylor, Norman H. (MIT Digital Computer Laboratory, 1952-12-11)
      The present schedule for the development of the first prototype model of WWII calls for the urgent decisions concerning specifications and block diagrams to be made early in 1953 so that time will be available to procure, ...

    • Design and Tests of Electronic Circuits for Operating Safety Margins 

      Forrester, Jay W. (MIT Digital Computer Laboratory, 1953-09-21)
      A detailed laboratory test of circuits should be made to measure the operating margins and the sensitivity of the circuit to component changes. Also a measurement of marginal checking effectiveness is needed. A curve of ...

    • Design and Tests of Electronic Circuits for Operating Safety Margins 

      Forrester, Jay W. (MIT Digital Computer Laboratory, 1953-01-27)
      A detailed laboratory test of circuits should be made to measure the operating margins and the sensitivity of the circuit to component changes. Also a measurement of marginal checking effectiveness is needed. A curve of ...

    • Digital Computation for Anti-Submarine Problem 

      Forrester, Jay W.; Everett, Robert R. (MIT Servomechanisms Laboratory, 1947-10-01)
      Report on a study of a simplified version of the anti-submarine problem. The objective of this study has been to estimate the storage capacity and computing time required in a digital machine and no serious attempt has ...

    • Digital Computer Laboratory construction completion 

      Fahnestock, Harris. (MIT Digital Computer Laboratory, 1952-07-08)
      Assessment of renovation undertaken in Division 6 facility space, breakdown of priorities and costs involved.

    • The Digital Computer Laboratory of the Massachusetts Institute of Technology 

      Digital Computer Laboratory Staff (MIT Digital Computer Laboratory, 1953-10-01)
      This report provides an overview of the Digital Computer Laboratory at MIT. It includes information about the history of the laboratory, the Whirlwind I computer, the laboratory program, the people, and the atmosphere of ...

    • Digital Computers for Air Defense System 

      Fahnestock, Harris; Everett, Robert R. (MIT Digital Computer Laboratory, 1951-10-05)
      Memorandum on estimates regarding time and personnel required for the work leading up to the production of digital computers suitable for air defense information centers.

    • Digital Computers in Science 

      Forrester, Jay W. (MIT Servomechanisms Laboratory, 1947-04-09)
      Memorandum from the Servomechanisms Laboratory research teams on the use of digital computers in science.