Download or read book A Coincident current Magnetic Memory Unit written by William N. Papian and published by . This book was released on 1950 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: A small, toroidal, ferromagnetic core whose B-H characteristic is properly 'rectangular' in shape may be made to operate so that its flux polarity reverses only when the right combination of two or three magnetizing coils are coincidentally excited. The core may then be used as a coincident-current binary memory device which might be assembled, with many others, into a two- or three-dimensional memory system. Selection within such a system would be accomplished by means of physical-line switching along the two or three space coordinates. The response times of rectangular-loop cores are found to vary over an extremely large range. To a first approximation, eddy-current shielding accounts for these response times, which range from tenths of a second for some metallic cores to less than a microsecond for some ferritic cores. Information-retention ratios and signal ratios are defined and are used to assess the ability of a core to operate as a coincident-current memory unit. A test setup which makes it possible to obtain these ratios for different sets of operating conditions is devised and used on a number of cores. Selected results are presented and discussed relative to the pertinent hysteresis-loop shapes.
Download or read book The Preliminary Design of a Coincident current Magnetic Core Memory for the ERA 1101 Digital Computer written by Frank Butler Cole and published by . This book was released on 1958 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NBS Special Publication written by and published by . This book was released on 1965 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Magnetic Drive Circuits for Coincident Current Core Memory written by Carl Heinz Wilhelm Meyer and published by . This book was released on 1960 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Incorporation of a Magnetic matrix Switch Into a Multiplanar Coincident current Magnetic Memory written by Arthur Dadmum Hughes and published by . This book was released on 1954 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of a Symposium on Large Scale Digital Computing Machinery written by and published by . This book was released on 1953 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume of the Proceedings is a collection of the transcripts of papers presented at the Computer Symposium sponsored by Argonne National Laboratory on August 3, 4, and 5, 1953. These papers deal mainly with the engineering aspects of the design of digital computers.
Download or read book The Fabric of Interface written by Stephen Monteiro and published by MIT Press. This book was released on 2017-11-10 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tracing the genealogy of our physical interaction with mobile devices back to textile and needlecraft culture. For many of our interactions with digital media, we do not sit at a keyboard but hold a mobile device in our hands. We turn and tilt and stroke and tap, and through these physical interactions with an object we make things: images, links, sites, networks. In The Fabric of Interface, Stephen Monteiro argues that our everyday digital practice has taken on traits common to textile and needlecraft culture. Our smart phones and tablets use some of the same skills—manual dexterity, pattern making, and linking—required by the handloom, the needlepoint hoop, and the lap-sized quilting frame. Monteiro goes on to argue that the capacity of textile metaphors to describe computing (weaving code, threaded discussions, zipped files, software patches, switch fabrics) represents deeper connections between digital communication and what has been called “homecraft” or “women's work.” Connecting networked media to practices that seem alien to media technologies, Monteiro identifies handicraft and textile techniques in the production of software and hardware, and cites the punched cards that were read by a loom's rods as a primitive form of computer memory; examines textual and visual discourses that position the digital image as a malleable fabric across its production, access, and use; compares the digital labor of liking, linking, and tagging to such earlier forms of collective production as quilting bees and piecework; and describes how the convergence of intimacy and handiwork at the screen interface, combined with needlecraft aesthetics, genders networked culture and activities in unexpected ways.
Download or read book National Bureau of Standards Miscellaneous Publication written by and published by . This book was released on 1965 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Century of Electrical Engineering and Computer Science at MIT 1882 1982 written by Karl L. Wildes and published by MIT Press. This book was released on 1985 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book's text and many photographs introduce readers to the renowned teachers and researchers who are still well known in engineering circles. Electrical engineering is a protean profession. Today the field embraces many disciplines that seem far removed from its roots in the telegraph, telephone, electric lamps, motors, and generators. To a remarkable extent, this chronicle of change and growth at a single institution is a capsule history of the discipline and profession of electrical engineering as it developed worldwide. Even when MIT was not leading the way, the department was usually quick to adapt to changing needs, goals, curricula, and research programs. What has remained constant throughout is the dynamic interaction of teaching and research, flexibility of administration, the interconnections with industrial progress and national priorities. The book's text and many photographs introduce readers to the renowned teachers and researchers who are still well known in engineering circles, among them: Vannevar Bush, Harold Hazen, Edward Bowles, Gordon Brown, Harold Edgerton, Ernst Guillemin, Arthur von Hippel, and Jay Forrester. The book covers the department's major areas of activity -- electrical power systems, servomechanisms, circuit theory, communications theory, radar and microwaves (developed first at the famed Radiation Laboratory during World War II), insulation and dielectrics, electronics, acoustics, and computation. This rich history of accomplishments shows moreover that years before "Computer Science" was added to the department's name such pioneering results in computation and control as Vannevar Bush's Differential Analyzer, early cybernetic devices and numerically controlled servomechanisms, the Whirlwind computer, and the evolution of time-sharing computation had already been achieved.
Download or read book Catalog of Technical Reports written by United States. Dept. of Commerce. Office of Technical Services and published by . This book was released on with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recent Advances in Coincident current Magnetic Memory Techniques written by International Telemeter Corporation and published by . This book was released on with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Research Reports written by and published by . This book was released on 1959 with total page 1018 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introduction to Magnetic Random Access Memory written by Bernard Dieny and published by John Wiley & Sons. This book was released on 2016-11-14 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic random-access memory (MRAM) is poised to replace traditional computer memory based on complementary metal-oxide semiconductors (CMOS). MRAM will surpass all other types of memory devices in terms of nonvolatility, low energy dissipation, fast switching speed, radiation hardness, and durability. Although toggle-MRAM is currently a commercial product, it is clear that future developments in MRAM will be based on spin-transfer torque, which makes use of electrons’ spin angular momentum instead of their charge. MRAM will require an amalgamation of magnetics and microelectronics technologies. However, researchers and developers in magnetics and in microelectronics attend different technical conferences, publish in different journals, use different tools, and have different backgrounds in condensed-matter physics, electrical engineering, and materials science. This book is an introduction to MRAM for microelectronics engineers written by specialists in magnetic materials and devices. It presents the basic phenomena involved in MRAM, the materials and film stacks being used, the basic principles of the various types of MRAM (toggle and spin-transfer torque; magnetized in-plane or perpendicular-to-plane), the back-end magnetic technology, and recent developments toward logic-in-memory architectures. It helps bridge the cultural gap between the microelectronics and magnetics communities.
Download or read book Computer Science Technology written by Robert B. J. Warnar and published by . This book was released on 1977 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Report of the National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1957 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Highlights of the National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1955 with total page 906 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Miscellaneous Publication National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1965 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
