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Biased Controlled Arithmetic and Translating Matrix

IP.com Disclosure Number: IPCOM000098882D
Original Publication Date: 1958-Aug-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Bloch, E: AUTHOR [+2]

Abstract

A 10 by 10 core matrix in which each of the cores is switched by a unique combination of coded input numbers lends itself to logical arithmetic operations such as addition and subtraction. A two-out-of-five code is described in which the five drive lines are labeled 0, 1, 2, 3 and 6 and each number is coded as shown by the boxes marked'' J''. By arbitrarily choosing the column drives to supply the field necessary to switch anyone of the cores, each column drive line supplies Ho/2 which is half the field necessary to switch any one core. Additionally, by selecting the row drivers to apply an inhibiting bias to all rows except that row in which a designated core is to be switched, as determined by the input number, the coded inputs may be added, or subtracted, directly, eliminating the need for decoding equipment.

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Biased Controlled Arithmetic and Translating Matrix

A 10 by 10 core matrix in which each of the cores is switched by a unique combination of coded input numbers lends itself to logical arithmetic operations such as addition and subtraction. A two-out-of-five code is described in which the five drive lines are labeled 0, 1, 2, 3 and 6 and each number is coded as shown by the boxes marked'' J''. By arbitrarily choosing the column drives to supply the field necessary to switch anyone of the cores, each column drive line supplies Ho/2 which is half the field necessary to switch any one core. Additionally, by selecting the row drivers to apply an inhibiting bias to all rows except that row in which a designated core is to be switched, as determined by the input number, the coded inputs may be added, or subtracted, directly, eliminating the need for decoding equipment.

One core in such a matrix is illustrated. This performs the logical operation of 2 plus 3. The row drivers, labeled Y, threaded through the core, are seen to exclude those designating the decimal number 3, and therefore leave the cores in that row unbiased, while the remainder of the rows are threaded by either the 0-drive line or the 3-drive line or both to bias all other row cores off. The column designating the decimal number 2 is the only one that will have both column drive lines, labeled X, activated. The greatest drive any other core in the unbiased Low will have is Ho/2, while the core shown rece...