Accession Number : AD0826550

Title :   MAGNETIC MATRIX STUDY.

Descriptive Note : Final rept. 14 Dec 66-14 Nov 67,

Corporate Author : IBM FEDERAL SYSTEMS DIV OWEGO NY ELECTRONICS SYSTEMS CENTER

Personal Author(s) : Liebschutz, Lynn C.

Report Date : JAN 1968

Pagination or Media Count : 42

Abstract : The objectives of a magnetic selection matrix capable of generating memory word currents are low power, high speed and increased reliability over present systems. Basically, these objectives are approached with magnetic film memories. However, such memories are in general linear access arrays which consist of numerous drivers. Overall reliability may be augmented through the use of a rotational mode (high speed) selection device by taking advantage of the reduction in the quantity of associated electronics. The design objectives for this program have been made consistent with present memory word drive requirements. It is to these goals that the Magnetic Matrix Study has been directed. The most important advantages expected of this technology are the reduction of memory system power consumption and the increase in the mean-time-before-failure. Comparisons have been made between this and competing technologies, such as the standard diode decode, and it is shown that there is a significant reduction in electronics for the magnetic matrix selection. Despite this factor, the overall reliability is within 10 percent of other approaches due to the higher anticipated failure rate of more complex word line loop associated with each selector. While power figures show a calculated three to one or better advantage with the present level of instrumentation, it is possible to converge the various approaches by reducing driver standby power consumption, for it is here that a considerable percentage of the power per cycle is dissipated. (Author)

Descriptors :   (*THIN FILM STORAGE DEVICES, MAGNETIC CORES), RELIABILITY, FAILURE(ELECTRONICS), POWER, PERFORMANCE(ENGINEERING), DESIGN.

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE