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Lincoln Laboratory. Division 6

 Organization

Found in 717 Collections and/or Records:

Documents to be sent to IBM, 1955 June 21

 File — Multiple Containers
Identifier: 16
Scope and Contents Division 6 Memo M-3706. Memorandum notifying Group 62 and 42 staff and secretaries that copies of all MIT documents on AN/FSQ-7 Inputs and display should be sent to the IBM Subcontracts Office and to their Publications Group.
Dates: 1955 June 21

Drawing numbering system used at M.I.T. Lincoln Laboratory Div. 6 (Lex.), 1952 - 1954

 File — Multiple Containers
Identifier: 16
Scope and Contents Log of Division 6 engineering drawings numbered A-42101 through A-43854. Includes: drawing number, title, used in, originator, drawn by, eng'g approval, graded, class, and remarks.
Dates: 1952 - 1954

Drawing numbering system used at M.I.T. Lincoln Laboratory Div. 6 (Lex.), 1952 - 1959

 File — Multiple Containers
Identifier: 16
Scope and Contents Table demonstrating the Division 6 drawing numbering system. Also includes WWI numbers. Includes a drawing and a note: "preceding picture was reverse side of front cover: WWI General Numbers 55,002 thru 59,995.".
Dates: 1952 - 1959

Drawing numbering system used at M.I.T. Lincoln Laboratory Div. 6 (Lex.), 1949 - 1956

 File — Multiple Containers
Identifier: 16
Scope and Contents Log of Division 6 engineering drawings numbered A-40400 through SA-40579. Includes: drawing number, title, used in, originator, drawn by, eng'g approval, graded, class, and remarks.
Dates: 1949 - 1956

Editorial Supplement, Biweekly Report for 11 February 1955, 1955 February 11

 File — Multiple Containers
Identifier: 16
Scope and Contents MIT DIC 6889. Project Whirlwind Memo 6M-3375, Supplement 1. Supplement to the bi-weekly progress report of Division 6 research teams.
Dates: 1955 February 11

Editorial Supplement, Biweekly Report for 25 February 1955, 1955 February 25

 File — Multiple Containers
Identifier: 16
Scope and Contents MIT DIC 6889. Project Whirlwind Memo 6M-3405, Supplement 1. Supplement to the bi-weekly progress report of Division 6 research teams.
Dates: 1955 February 25

Effects of Tape Thickness and Temperature on Flux Reversal of 4-79 Molybdenum-Permalloy, 1954 May 03

 File — Multiple Containers
Identifier: 16
Scope and Contents MIT DIC 6889. Project Whirlwind Memo M-2804. Measurements of the flux reversal time t have been made for 1/8-mil, 1/4-mil, 1/2-mil, and 1-mil 4-79 Molybdenum-Permalloy tape cores as a function of the applied field. These measurements were taken at seven different temperatures, ranging from -196ºC. to 270ºC. From these measurements, the switching coefficient S[subscript W] = (H - H[subscript O] t is found. Determination of the switching coefficient as a function of tape thickness is shown to...
Dates: 1954 May 03

EPSCOM Biweekly Report for 1 June 1956, 1956 June 07

 File — Multiple Containers
Identifier: 16
Scope and Contents Project Whirlwind Memo 6M-4359. A summary of EPSCOM program activity is included along with reports on several programs. One new programmer, Marilyn Lynch (BTL), has joined EPSCOM bringing the EPSCOM force to 40 people.
Dates: 1956 June 07

EPSCOM Biweekly Report for 4 May 1956, 1956 May 10

 File — Multiple Containers
Identifier: 16
Scope and Contents Project Whirlwind Memo 6M-4323. EPSCOM now includes 38 people. A chart showing most of the EPSCOM programs includes scheduling information.
Dates: 1956 May 10

EPSCOM Biweekly Report for 6 April 1956, 1956 April 09

 File — Multiple Containers
Identifier: 16
Scope and Contents Project Whirlwind Memo 6M-4289. EPSCOM manpower now stands at 35 people. Progress on all programs is satisfactory.
Dates: 1956 April 09

EPSCOM Biweekly Report for 15 June 1956, 1956 June 20

 File — Multiple Containers
Identifier: 16
Scope and Contents Project Whirlwind Memo 6M-4371. The EPSCOM force still stands at 40 people. A summary chart and schedule is included along with reports from programmers..
Dates: 1956 June 20

EPSCOM Biweekly Report for 18 May 1956, 1956 June 05

 File — Multiple Containers
Identifier: 16
Scope and Contents Project Whirlwind Memo 6M-4345. EPSCOM now includes 39 people. A report on most of the EPSCOM programs is given.
Dates: 1956 June 05

EPSCOM Biweekly Report for 20 April 1956, 1956 April 27

 File — Multiple Containers
Identifier: 16
Scope and Contents Project Whirlwind Memo 6M-4307. EPSCOM, now Group 66, with 37 people including a new secretary at Murphy Hospital, is being reorganized into 3 subsections.
Dates: 1956 April 27

Equation of Motion for a Cylindrical 180° Domain Wall, 1953 July 30

 File — Multiple Containers
Identifier: 16
Scope and Contents MIT DIC 6889. Project Whirlwind Memo M-2275. The equation of motion for a cylindrical domain wall has been derived utilizing the Lagrangian formulation. Additional terms enter the equation of motion for a cylindrical wall that do not appear in that for a planar wall.
Dates: 1953 July 30

Establishing New Procedures for Various Phases of AN/FSQ-7 Program, 1954 March 23

 File — Multiple Containers
Identifier: 16
Scope and Contents Project Whirlwind Memo M-2744. Memorandum on a new policy for the establishment of procedures for the adoption of new procedures for the AN/FSQ-7 Program.
Dates: 1954 March 23

Evaluation of Ferroxcube Cores, 1954 June 28

 File — Multiple Containers
Identifier: 16
Scope and Contents MIT DIC 6889. Project Whirlwind Memo M-2880. A 1000-core lot, Ferroxcube 170T025A402, was evaluated to determine its usefulness as memory core. The squareness and signal ratios of this lot were excellent. Its uniformity was good. The switching time of this lot, however, was longer than the switching time of General Ceramics' cores. These cores became disturb sensitive at about 900 ma and appeared to be extremely sensitive to temperature changes. They might be satisfactory (i.e. not disturb...
Dates: 1954 June 28

Evaluation tests on the XD-1 central computer, 1955 January 21

 File — Multiple Containers
Identifier: 16
Scope and Contents Division 6 Memo M-3317. Memorandum discussing the evaluation of XD-1 by a series of tests made over a period of a few weeks ending March 1, 1955. Existing XD-1 reliability programs were used during most phases of test. Machine operation was baaed on its logical and physical completeness, reliability, margin data, and its ability to withstand mechanical and thermal shock. Includes: introduction and outline of tests. This memorandum represents an expansion of 6M-3271 "XD-1 Test...
Dates: 1955 January 21

Experiments on a three-core cell for high-speed memories, approximately 1955-1959

 File — Multiple Containers
Identifier: 16
Scope and Contents Division 6 Memo M-3505. The coincident-current magnetic-core memory was suggested in 1949 by Jay W. Forrester as a reliable, random-access storage medium. Development of the first working memory of this type, for the Memory Test Computer at M.I.T., established conclusively the superiority of such a memory over competitive systems and paved the way for others to exploit the new device. Includes: magnetic memories, external selection, experimental results, memory criteria, design considerations,...
Dates: approximately 1955-1959

Extension of subcontract no. 49, 1955 July 06

 File — Multiple Containers
Identifier: 16
Scope and Contents Division 6 Memo M-3738. A one-year extension of Subcontract No. 49 with the Philco Corporation was recommmended to (1) continue research aimed at establishing the reliability of the surface-barrier transistor and improving its performance in digital-computer circuits, (2) establish specifications for a computer surface-barrier transistor, (3) develop transistors for driving magnetic-core memories, and (4) develop digital-computer basic circuits.
Dates: 1955 July 06

Ferrite Synthesis, 1953 September 15

 File — Multiple Containers
Identifier: 16
Scope and Contents MIT DIC 6889. Project Whirlwind Memo M-2442. A systematic investigation of the MgO•MnO•Fe[subscript 2]O[subscript 3] system has indicated that rectangular hysteresis loops can be obtained over a wide range of composition. Maximum squareness is obtained in the region of 33-percent MgO, 25-percent Mno, and 42-percent Fe[subscript 2]O[subscript 3]. A composition of 35-percent MgO, 30-percent Mno, and 35-percent Fe[subscript 2]O[subscript 3] appears best for coincident-current memory applications....
Dates: 1953 September 15

Ferrite Synthesis II, 1954 February 17

 File — Multiple Containers
Identifier: 16
Scope and Contents MIT DIC 6889. Project Whirlwind Memo M-2692. The systematic investigation of the MgO-MnO-Fe₂O₃ system for which preliminary results were reported in Memorandum M-2442, has been extended and verified. The patterns of loop squareness vs. composition have remained essential unchanged, but one new region has been added to the interpretation diagram for the loop-squareness patterns. The tentative phase interpretation which was offered in M-2442 has been confirmed by micro-structure studies and has...
Dates: 1954 February 17

Fiscal 1954 budget, 1953 August 18

 File — Multiple Containers
Identifier: 16
Scope and Contents Project Whirlwind Limited Memo L-117. Personnel estimate for Fiscal 1954 completed for Division 6 to show anticipated personnel needs existing in June 1954 and the estimated average needs during the previous fiscal year. Estimates of extraordinary expenses for the year were submitted to Walter DeQuoy in Memorandum L-104, dated 29 June 1953.
Dates: 1953 August 18

Four Alternative Proposals for Accommodating the 64 x 64 Memory in MTC, 1953 August 14

 File — Multiple Containers
Identifier: 16
Scope and Contents MIT DIC 6889. Project Whirlwind Memo M-2361. Four proposals are outlined for using a 64 x 64 = 2¹² -register memory in MTC, which was designed to have only 11 address bits. The first three involve very little extra equipment: I. Division of Memory into 32 x 32 quadrants elected by bank-switching instruction II. Operating as a 2048-word memory, with 2048 additional registers subject to limited access on only two or three instructions III. Use of a full 12-bit address by cutting...
Dates: 1953 August 14

Geometry of magnetic memory elements, 1956 January 18

 File — Multiple Containers
Identifier: 16
Scope and Contents Division 6 Memo M-4089. Two possible memory element geometries — the thin film and the toroid — are considered. The calculations show that under certain conditions the thin film geometry may be preferable for use in a very high-speed memory. Includes: introduction; theoretical ruminations; discussions and conclusions.
Dates: 1956 January 18

Graphical Summary of Core Data in the MgO-Fe₂O₃-MnO System, 1954 January 25

 File — Multiple Containers
Identifier: 16
Scope and Contents MIT DIC 6889. Project Whirlwind Memo M-2649. A graphical summary of some of the magnetic data which were collected during 1953 on the MgO-Fe₂O₃-MnO System is presented.
Dates: 1954 January 25

Group 62 Section Leaders Meeting - 8 February 1954, 1954 February 08

 File — Multiple Containers
Identifier: 16
Scope and Contents Project Whirlwind Memo M-2665. Consideration is being given to have MIT provide assistance to IBM with engineering development of specific items of the system. Decision on the switching system for drum circuits has been postponed. An engineering model of a mapper developed by IBM has been installed in WWI for test purposes.
Dates: 1954 February 08

Group 62 Section Leaders Meeting 24 May, 1954, 1954 May 27

 File — Multiple Containers
Identifier: 16
Scope and Contents Project Whirlwind Memo M-2837. Meetings with Air Force ADC have led to a plan for implementing the Air Division Combat Operations Center with a simplex FSQ-7 and a supplementary large board (projected) display. A procedure to formalize the processing of information thru the Control office to DES, Air Force, etc. is being prepared. Modifications to the display system have resulted in a reduction of approximately 3000 tubes. MTC will be moved to Lexington starting June 7.
Dates: 1954 May 27

Group 62 Section Leaders Meeting 25 January 1954, 1954 January 25

 File — Multiple Containers
Identifier: 16
Scope and Contents Project Whirlwind Memo M-2651. Decision on the display system and basic circuits for the instruction control frame were reached during the week. A revised basis for release of design and constructions by IBM in advance of Lincoln approval has been proposed by Project High. Initial negotiations leading to an Air Force contract for two duplex centrals (in addition to the XD-1 and XD-2 systems) have been started.
Dates: 1954 January 25

Group 62 Section Leaders Meeting-- AN/FSQ-7 Equipment Design Program, 1953 October 13

 File — Multiple Containers
Identifier: 16
Scope and Contents Project Whirlwind Memo M-2470. Two situations urgently need attention at the present time. The vacuum tube count for a central has become rather large, and every effort should be made to see what can be done to reduce the count. The space required for XD-1 exceeds the space available in the basement of building A, and several alternate arrangements are being investigated. Progress in other fields is fairly satisfactory.
Dates: 1953 October 13

Group 62 Section Leaders Meeting--April 5, 1954, 1954 April 06

 File — Multiple Containers
Identifier: 16
Scope and Contents Project Whirlwind Memo M-2760. IBM will furnish monthly status reports relative to time schedules. MTC will move about June 1 and be operative again about July 15. An initial proposal on the duplex central will be distributed about May 1. A separate drum field will be used for Mark X and Fine Grain Data inputs.
Dates: 1954 April 06