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Fluid Binary Full Adder

IP.com Disclosure Number: IPCOM000097397D
Original Publication Date: 1962-Nov-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Mitchell, AE: AUTHOR

Abstract

Three planar discs covering each other are stacked to form a stage of one binary order of a fluid operated full-adder. Two fluid binary half adders A and B are placed on either side of an intermediate layer comprising a fluid binary Or and several connecting channels. Each fluid binary element consists of a single-sided monostable fluid amplifier provided with controls. These partially make use of interacting free jets for logical connectives.

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Fluid Binary Full Adder

Three planar discs covering each other are stacked to form a stage of one binary order of a fluid operated full-adder. Two fluid binary half adders A and B are placed on either side of an intermediate layer comprising a fluid binary Or and several connecting channels. Each fluid binary element consists of a single- sided monostable fluid amplifier provided with controls. These partially make use of interacting free jets for logical connectives.

Input signals X and Y are fed to the respective control channels of half-adder A in the upper disc. If no input pressure control signal is present, the main jet emerging from the inflow pipe through the main inlet nozzle remains in its stable position attached to the repeatedly bent wall and exhausts into an open area. The presence of only one of signals X or Y causes the jet to separate from the rear part of the wall and to exhaust into receiver SA for producing the sum output signal of A. Both signals X and Y appearing at the same time interact. That is, the combined signal transitorily controls the amplifier so that the main jet is separated completely from the wall and exhausts into the receiver CA. This results in the carry output signal of A.

Half-adder B in the bottom layer operates similarly. One of its input signals is CO which is the carry signal of the preceding binary stage. The other input signal SA is fed across the intermediate layer via respective bores and channels. One of the outpu...