Lincoln Laboratory. Division 6
Found in 717 Collections and/or Records:
The noise problem in the coincident-current memory matrix, 1956 February 13
Thoughts on Incremental Permeability, 1954 September 17
Time schedule for XD-1 machine specifications and evaluation reports, 1955 February 7
Division 6 Memo M-3351. Memorandum providing a time schedule for machine evaluation tests of XD-1. The nature and purpose of evaluation tests performed on XD-1 and its associated equipment was outlined in "XD-1 Test Specifications" Memorandum 6M-3271, by J. A. O'Brien, 10 January 1955.
T.I.R. release of operational specifications and XD-1 equipment specifications, 1955 July 28
Division 6 Memo M-3793. Technical Information Releases were used for equipment specifications and operational specifications for both the prototype and production machines.
Transients for cryotron tree switch, 1956 March 30
Division 6 Memo M-4226. Describes a cryotron tree switch, the initial conditions for the various transients, and the circuit parameter value. A simple method for calculating the pole zero pattern is found. Finally, an asymptotic expression is found for the slowest and fastest exponentials in a 2n position switch. Includes: introduction, cryotron, tree switch, analysis, numerical solution of pole and zero locations, summary, table and figures.
Transistor circuits for driving coincident current memories., 1955 January 21
Division 6 Memo M-3316. Memorandum discussing transistors and how they are made to pass large currents as needed in magnetic memories by turning off the currents while the transistors are being switched. Includes diagram of transistor memory driver.
Transition system for air defense: estimate of cost and delivery for the initial sector, 1953 February 18
Trip Report to Bell Telephone Laboratories, Murray Hill, N.J., January 6, 1954, 1954 January 14
Trip Report: Trip to IRE, Bell Telephone Laboratories, Glenco, Naval Ordnance Laboratory, Professor Pulvari, Cavitron, Mullard, RCA, and NSA, March 23-31, 1954., 1954 April 13
MIT DIC 6889. Project Whirlwind Memo M-2778. A trip was made to various laboratories investigating ferroelectric and ferromagnetic materials for information storage and switching. Information is listed by topics.
Trip to Burroughs Research Center, Paoli, Pennsylvania, Tuesday, April 27, 1954, 1954 April 27
MIT DIC 6889. Project Whirlwind Memo M-2843. 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 switching applications.
Trip to Linde Corporation, Tonawanda, New York, August 17, 1953, to Discuss Growth and Procurement of Ferrite Single Crystals, 1953 September 8
MIT DIC 6889. Project Whirlwind Memo M-2398. 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 NSA, Washington, D. C., 1955 March 30
Division 6 Memo M-3495. 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 contact regarding their respective transistor computer projects. Present at the discussion: (NSA) Joseph J. Eachus, Howard Campaigne, Roger Moulton, C. R. Blair, Douglas Hogan, A. E. Slade.
Trip to RCA Victor, Camden, October 22, 1953, 1953 October 28
MIT DIC 6889. Project Whirlwind Memo M-2483. 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 care in testing sample batches should be directed toward checking reproducibility from batch to batch as their estimates are perhaps a bit optimistic about reproducibility.
Use of Silver in Etched-wiring Cards, 1954 February 3
Project Whirlwind Memo M-2669. 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 other metal. It is recommended that no silver be used in contact with laminated plastic materials, where potential is present, in equipment which is intended to operate dependably for long periods of time.
Vacuum and Vibration Speed Assembly of Core Memory Planes, 1956 February
MIT DIC 6889. Project Whirlwind Controlled Distribution Memo 6D-107. 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 stored-information rapidly available without scanning time required by other systems. Reprinted from Electronics, February 1956.
Visit to IBM, October 23, 1953, 1953 October 28
Visit to Remington Rand, 1953 May 12
Project Whirlwind Memo VI L-94. Description of a visit by two Lincoln Laboratory staff members to the Remington Rand office in Washington and to see the ONR Logistics computer at George Washington University.
Visits to IBM, 1954 July 9
Project Whirlwind Memo M-2896. Memorandum on procedures for advance notification of visits to IBM.
West Coast Trip, July, 1953, 1953 July 31
William H. Radford and Wilcox P. Overbeck papers
X-Ray Equipment for Magnetic Research, 1954 July 29
X-Y tests on memory plane units, 1955 April 11
XD-1 evaluation, 13 July 1955, 1955 September 12
Division 6 Memo M-3881. Second evaluation of the CD addressable drums performed on 13 July 1955. Includes: physical and logical status of XD-1; reliability; margins and margin history; shock tests; and conclusions.
XD-1 evaluation, 20 May 1955, 1955 June 8
XD-1 system operation and results of system tests from 3 December 1955 through 10 March 1956, 1956 March 28
XD-1 test specifications, 1955 January 10
Division 6 Memo M-3271. Description of the formation of a section within Group 62 organized to write test specifications for the XD-1 equipment to evaluate its performance. Lists the objectives of the XD-1 test specifications and the series of tests to be written.
XD-I Digit-Plane Driver, 1954 May 28
Project Whirlwind Memo M-2842. A self-balancing bridge is utilized in conjunction with an "and" and an "or" gate input to satisfy the wave form and gating specifications on the driver for a magnetic core memory digit plane winding.
- Archival Object 715
- Collection 2
- Computers -- History 1
- DIC 6345. 1
- Electronic digital computers -- History 1
- Magnetic cores 1
- Whirlwind computer. 1