Browsing Project Whirlwind by Title

Now showing items 1651-1670 of 1737

    • Transition system for air defense: estimate of cost and delivery for the initial sector 

      Division 2 Research Staff; Division 6 Research Staff (Lincoln Laboratory - Division 6, 1953-02-18)
      In Lincoln Laboratory Technical Memorandum No. 20, which describes the proposed Transition System for Air Defense, Section VIII indicates that a study was being made regarding the cost and time factors for an initial sector. ...

    • Transmittal of Publications to IBM 

      Kromer, A. P. (MIT Digital Computer Laboratory, 1953-06-08)
      Uniform procedure for transmittal of M-Memos, E-Notes and other publications of IBM is important. This memo indicates a procedure for handling this type of activity.

    • Trip Report of Visit to Bell Telephone Laboratories, IBM, Glenco Naval Research Laboratory and Dr. C. F. Pulvari 

      Buck, Dudley A. (MIT Digital Computer Laboratory, 1952-07-17)
      A trip was made at the conclusion of the thesis work on ferroelectrics for digital information storage and switching to compare progress and to exchange ideas with other researchers in this field. In addition, one visit ...

    • Trip Report to Bell Telephone Laboratories, Murray Hill, N.J., January 6, 1954 

      Goodenough, John B. (Lincoln Laboratory - Division 6, 1954-01-14)
      The ferrite single-crystal-synthesis program of the Bell Telephone Laboratories was investigated. Information on some experimental techniques for measurement about to be undertaken in this laboratory was also obtained. ...

    • Trip Report: Trip to IRE, Bell Telephone Laboratories, Glenco, Naval Ordnance Laboratory, Professor Pulvari, Cavitron, Mullard, RCA, and NSA, March 23-31, 1954. 

      Buck, Dudley A. (Lincoln Laboratory - Division 6, 1954-04-13)
      A trip was made to various laboratories investigating ferroelectric and ferromagnetic materials for information storage and switching. Information is listed by topics.

    • Trip To Bell Laboratories, Whippany 

      Brown, David R. (MIT Digital Computer Laboratory, 1951-10-13)
      The use of transistors in digital computers was discussed with Mr. Jean H. Felker who has designed and constructed a 16-digit serial multiplier using 44 transistors and no vacuum tubes. The basic prf is one megacycle. A ...

    • Trip to Burroughs Research Center, Paoli, Pennsylvania, Tuesday, April 27, 1954 

      Brown, David R.; Buck, Dudley A. (Lincoln Laboratory - Division 6, 1954-04-27)
      A trip was made to the Burroughs Research Center to discuss magnetic-core computer components and fabrication of metal cores. They are planning to make and improve metal cores and they have used magnetic cores in logical ...

    • Trip to Control Instrument Co., August 27, 28, 29 and September 3, 1952 

      Paine, B. B. (MIT Digital Computer Laboratory, 1952-09-09)
      After we instructed them in regard to proper soldering of connections, Control Instrument Co. and their subcontractor have increased greatly the quality of Burroughs units on our oder. The delay in meeting the promised ...

    • Trip to General Ceramics, Jan. 9, 1952 

      Brown, David R. (MIT Digital Computer Laboratory, 1952-01-10)
      The development of ferrite cores suitable for use in a high-speed memory and other computer circuits was discussed with the Vice President and Research Staff of General Ceramics and Steatite Corporation. Considerable ...

    • Trip to General Ceramics, November 19-20, 1952 

      Canty, W. J. (MIT Digital Computer Laboratory, 1952-12-02)
      A trip to General Ceramics and Steatite Corporation is reported. Calibration of the Tektronix 513-D Oscilloscope used in conjunction with ferrite-core pules-test equipment showed the internal voltage calibrator to be ...

    • Trip to Linde Corporation, Tonawanda, New York, August 17, 1953, to Discuss Growth and Procurement of Ferrite Single Crystals 

      Buck, Dudley A. (Lincoln Laboratory - Division 6, 1953-09-08)
      The Linde Corporation is growing ferrite single crystals by the Verneuil process. They are of interest to this laboratory for basic studies of the switching mechanism of ferrites.

    • Trip to Magnetics, Inc., August 5, 1952 

      Brown, David R. (MIT Digital Computer Laboratory, 1952-08-08)
      We have reviewed the measurements made on the batch of 300 molybdenum permalloy cores, received July 23, 1952, at Magnetics, Inc., and find that their measurements do not differ greatly from ours. More precision is needed ...

    • Trip to Magnetics, Inc., June 26, 1952 

      Brown, David R. (MIT Digital Computer Laboratory, 1952-07-08)
      Ted Ogden and I visited Magnetics, Inc. in Butler, Pa., on June 26 to discuss magnetic cores. We have ordered 300 Mo Perm cores of 1/8 mil material, l/8" wide and 1/8" ID, 10 wraps. These cores should be finished on July ...

    • Trip to NSA, Washington, D. C. 

      Eckl, D. J. (Lincoln Laboratory - Division 6, 1955-03-30)
      NSA in Washington submitted to Philco a purchase description for a computer, SOLO, to be built with an SBT control and arithmetic unit and a 4O96 register ferrite core memory. NSA and Group 63 agreed to maintain close ...

    • Trip to RCA Victor, Camden, October 22, 1953 

      Vinal, Francis E. (Lincoln Laboratory - Division 6, 1953-10-28)
      Review of the progress in memory core production at RCA Victor in Camden is encouraging but considerable stabilization remains to be accomplished in the process, particularly in the pressing and firing operations. Particular ...

    • Tripe to ERA and University of Illinois 

      Corderman, C. L. (MIT Digital Computer Laboratory, 1952-01-21)
      This memorandum reports on visits to ERA and the University of Illinois. Both groups are working on computers using Williams-type memory systems with operation at 1024 spots per tube. At ERA the proposed memory is ...

    • Uniformity Tests on Ferrite Cores 

      McCusker, J. H. (MIT Digital Computer Laboratory, 1952-10-21)
      One thousand ferrite cores from General Ceramics, M-1118 (fired 3-9-52), were tested for uniformity of the peak magnitude of the disturbed one. Approximately 25 per cent and 50 per cent of the cores were within ± 5 per ...

    • Use of Silver in Etched-wiring Cards 

      Loeb, A. L.; Paine, B. B. (Lincoln Laboratory - Division 6, 1954-02-03)
      Silver migration occurs easily through and across the surface of a variety of materials in the presence of moisture and unipolar potential. The behavior of silver is peculiar in that it may migrate more easily than any ...

    • Utilization of Magnetic Drum and High-Speed Random-Access Storage 

      Walquist, R. L. (MIT Digital Computer Laboratory, 1952-05-02)
      Several techniques are discussed whereby a computer utilizing a large magnetic drum memory and a small high-speed random-access memory can have an effective operating speed approaching that of a similar computer for which ...

    • Vacuum and Vibration Speed Assembly of Core Memory Planes 

      Guditz, E. A.; Smith, L. B. (Lincoln Laboratory - Division 6, 1956-02)
      Memory units and matrix switches using new square-loop ferrite material increase speed and reliability of digital computers. Storage units with arbitrary-access and read-out time of five microseconds or less makes ...