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Diode-steered linear magnetic-core memory by A. Melmed

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Published by Courant Institute of Mathematical Sciences, New York University in New York .
Written in English


Book details:

Edition Notes

Statementby A. Melmed and R. Shevlin.
ContributionsShevlin, R., Melmed, A.
The Physical Object
Pagination24 p.
Number of Pages24
ID Numbers
Open LibraryOL20424824M

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It will be shown that utilization of the diodes will retain the advantages of the core switch and will eliminate its development of a combination sense and digit drive line free from the effects of noise and post-write disturb will also be design of an word 54 bit memory now under construction with a cycle. This paper describes techniques which take advantage of word arrangement to make possible large, high-speed magnetic-core memories at moderate cost. Economy is obtained by means of a two-coordinate selection system using diffused junction rectifiers as steering diodes. By taking advantage of the relatively slow recovery time of these rectifiers, automatic rewrite selection is obtained in a Cited by: 9. USA USDA USA US A US A US A US D A USD A US DA US A US A US A Authority US United States Prior art keywords line pulse read cores core Prior art date Legal status (The legal status is an assumption and is not a legal : William J Mahoney. out of 5 stars Great book for experimentalists, but no discussion of magnets with ferrite cores Reviewed in the United States on J Classic Book with lots of high-quality cases derived, but it does not discuss what happens when you add a s: 1.

a.c. output a.c. permeability a.c. power a.c. winding amplitude applications applied voltage audio frequency audio frequency magnetic balanced saturable reactor bridge circuit capacitance Chapter characteristic of Fig connected constant control ampere turns control circuit inductance control current control flux control signal control winding.   Boards providing 32 kB of memory were not uncommon. The heyday of core memory was around to the late s. Eventually, semiconductor memory became cheap enough to supplant it, and of course we know today how that has grown. I have a surplus core memory board that provided 16k words (bit) of memory, which I bought off eBay a few years ago. Magnetic core memory was developed in the late s and s, and remained the primary way that early computers read, wrote and stored data until RAM came along in the s. This tutorial illustrates how it worked. The set up looks a little bit like chocolate doughnuts strung through a chain link fence. While not as tasty, it is a good bit.   It is time to triple your memory Join o others who are using the method and transform your memory today. Anthony Metivier has taught as a professor, is the creator of the acclaimed Magnetic Memory Method and the author behind a dozen bestselling books on the topic of memory and language learning.

In a technical article entitled, Diode Steered Magnetic Core Memory, by Melmed and Shevlin appearing in the IRE Transactions on Electronic Computers, volume EC-S, No. 4, December , pages e, there is described a magnetic core memory system which, in theory, would appear to require that only two separate wires be passed through each of. Magnetic-core memory was the predominant form of random-access computer memory for 20 years between about and Such memory is often just called core memory, or, informally, core.. Core memory uses toroids (rings) of a hard magnetic material (usually a semi-hard ferrite) as transformer cores, where each wire threaded through the core serves as a transformer winding. Non-linear equation: cannot be solved analytically Solution methods: o Numerical (PSpice) o Graphical (load-line) o Approximation to get linear equations (diode piece-linear model) F. Najmabadi, ECE65, Winter / (1) KVL: KCL: current in all elements = − = + v D nV T D S i D D D i I e v Ri v i. Zusammenfassung. Matrizenspeicher wurden in den vergangenen Jahren als schnelle und große Arbeitsspeicher für Rechenanlagen entwickelt. Die Matrizenanordnung der Speicherelemente eignet sich für diesen Zweck besonders gut, weil sie die willkürliche Auswahl eines jeden Elements in gleich kurzer Zeit gestattet und weil als Speicherelemente passive Bauteile verwendet werden können.