Project Whirlwind: Recent submissions
Now showing items 841-860 of 1737
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An Investigation of Some Parameters which Influence the Magnetic Characteristics of Ferrites
(MIT Department of Electrical Engineering, 1954-09-20)Master's Thesis Proposal: An Investigation of Some Parameters which Influence the Magnetic Characteristics of Ferrites. Recent theories have been advanced concerning the squareness of the hysteresis loop and the dynamics ... -
Laboratory Personnel
(MIT Digital Computer Laboratory, 1954-06-01)Memorandum listing Laboratory Personnel of the MIT Digital Computer Laboratory. -
MTC Drawings and Service File
(Lincoln Laboratory - Division 6, 1954-02-05)Logical divisions have been made of the Memory Test Computer to serve as divisions of the MTC Service File. Abbreviations of the divisions will be placed in the title block of each MTC block diagram, block schematic, circuit ... -
Laboratory Personnel
(MIT Digital Computer Laboratory, 1954-03-01)Memorandum listing Laboratory Personnel of the MIT Digital Computer Laboratory. -
Group 62 Section Leaders Meeting - June 7, 1954
(Lincoln Laboratory - Division 6, 1954-06-08)The contract for construction of Building B started June 7th. A study group is being set up to investigate a smaller and faster computer for air defense at advanced locations. IBM is now back scheduled an average of six ... -
Proposed Memory Address Selection System
(Lincoln Laboratory - Division 6, 1954-05-26)Increased memory in the use of cathodes is made possible by multi-level memory address selection and improved circuit designs. -
Group 62 Section Leaders Meeting -- March 8, 1954
(Lincoln Laboratory - Division 6, 1954-03-10)IBM has requested manpower from MIT for XD-1 testing. A procurement procedure for components designed at MIT is outlined in M-2710. IBM air transportation between Bedford and Poughkeepsie is now available. GE will ship ... -
Group 62 Section Leaders Meeting -- March 22, 1954
(Lincoln Laboratory - Division 6, 1954-03-24)Agreement was reached to use the Typotron for DID in the XD-1 and subsequent systems. Plans to secure and train additional personnel for system testing and maintenance are under way. A floor layout for the operations areas ... -
Stress Effects in Ferrites and Generalization of Switching Coefficient for Non-square Materials
(Lincoln Laboratory - Division 6, 1954-01-06)The hysteresis-loop squareness R[subscript s], the switching coefficient S[subscript W], and the threshold field H[subscript o] of a nickel-zinc ferrite are found to increase upon application of a compressive stress. The ... -
Graphical Summary of Core Data in the MgO-Fe₂O₃-MnO System
(Lincoln Laboratory - Division 6, 1954-01-25)A graphical summary of some of the magnetic data which were collected during 1953 on the MgO-Fe₂O₃-MnO System is presented. -
Group 62 Section Leaders Meeting 25 January 1954
(Lincoln Laboratory - Division 6, 2009-06-12)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 ... -
Conference on Ferrimagnetism, 11-12 October, 1954
(Lincoln Laboratory - Division 6, 1954-12-08)The eighteen papers which were presented at the conference on ferrimagnetism at the U. S. Naval Ordnance Laboratory, 11-12 October 1954, are summarized. Pertinent discussions are also included. -
Summary of MIT-IBM Engineering Collaboration For The Period September 1 through October 31, 1954
(Lincoln Laboratory - Division 6, 1954-11-04)Engineering activity level has increased with acceleration of planning and design for the production systems. Specifications for the prototype system (Exhibit AFCRC-l) has been brought up to date. Miscellaneous Radar Inputs ... -
Description of Memory Test Setup VI
(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 ... -
Laboratory Personnel
(MIT Digital Computer Laboratory, 1954-05-03)Memorandum listing Laboratory Personnel of the MIT Digital Computer Laboratory. -
Trip Report: Trip to IRE, Bell Telephone Laboratories, Glenco, Naval Ordnance Laboratory, Professor Pulvari, Cavitron, Mullard, RCA, and NSA, March 23-31, 1954.
(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. -
Group 62 Section Leaders Meeting - 8 February 1954
(Lincoln Laboratory - Division 6, 2009-06-12)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 ... -
Core Drivers - Model V and Model VI Applications, Limitations, and Modifications
(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 ... -
One One or the Other
(Lincoln Laboratory - Division 6, 1954-05-28)Memorandum on notation for describing binary states without ambiguity. -
Tentative Cathode Estimates for 256²x33 and 128²x33 Core Memories
(Lincoln Laboratory - Division 6, 1954-08-06)The largest number of cathodes for a 256²x33 memory and 128²x33 memory is estimated to be 4756 and 1912 respectively.
