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Browse Prior Art Database

Fluid Binary Full Adder

IP.com Disclosure Number: IPCOM000096451D
Original Publication Date: 1963-Jun-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 55K

Publishing Venue

IBM

Related People

Grubb, HR: AUTHOR

Abstract

The full-adder in A has two interconnected fluid jet momentum interchange type fluid half-adders U and L. In each half-adder, a fluid power stream passes from an inlet 1 through a nozzle and is normally diverted by a constant bias pressure from 2 into a no sum-no carry outlet 3. A fluid pressure signal to either input X or Y, but not both, diverts the power stream leftward against the bias pressure so it discharges through sum outlet 4. A signal to both X and Y diverts the stream further causing it to discharge through carry outlet 5.

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Fluid Binary Full Adder

The full-adder in A has two interconnected fluid jet momentum interchange type fluid half-adders U and L. In each half-adder, a fluid power stream passes from an inlet 1 through a nozzle and is normally diverted by a constant bias pressure from 2 into a no sum-no carry outlet 3. A fluid pressure signal to either input X or Y, but not both, diverts the power stream leftward against the bias pressure so it discharges through sum outlet 4. A signal to both X and Y diverts the stream further causing it to discharge through carry outlet 5.

In half-adder U, X is connected to the carry outlet of the previous stage, not shown. Y is connected to the sum outlet 4 of L. Carry outlets 5 of U and L are Or'd to provide a carry signal in 6 if either 5 is pulsed.

The full-adder in B is of the fluid jet momentum interchange type. In this, a fluid power stream is biased by a constant bias fluid pressure from 10 to a no sum-no carry outlet 11. This bias pressure is overcome to varying degrees. This is by supplying a fluid pressure signal to one or more of three inputs R, S, T disposed opposite 10, S representing the carry from a previous stage. A signal to one of the inputs R, S or T diverts the stream a limited distance into a sum-no carry outlet 12. A signal to two of the inputs diverts the stream further into carry- no sum outlet 13. A signal to all three inputs diverts this stream further to carry & sum outlet 14. To achieve this, the constant bias force...