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Multivalued Logic Apparatus

IP.com Disclosure Number: IPCOM000098471D
Original Publication Date: 1960-Nov-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Gazale, MJ: AUTHOR

Abstract

The apparatus generates, from a plurality of multivalued information input signals, a single output whose value is independent of any of the input signal value s.

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Multivalued Logic Apparatus

The apparatus generates, from a plurality of multivalued information input signals, a single output whose value is independent of any of the input signal value s.

Three relays 10, 11 and 12 are provided, each relay being energized by the application of either +10 or +20 volts but not by zero volts, The corresponding relay points 10-1, 11-1 and 12-1 are normally closed, connecting a single output line 13 to multivalued input channels 14, 15 and 16. A selector signal 17 is selectively permitted to assume one of three values, zero volts, +10 volts or +20 volts.

Relays 10, 11 and 12 are biased by voltages 0, +10 and +20, respectively. When signal 17 is zero, relays 11 and 12 are subjected to 10 volts and 20 volts, respectively, and are energized, opening points 11-1 and 12-1 and leaving only input channel 14 connected to output 13. When signal 17 is +10 volts, relays 10 and 12 are subjected to ten volts each, leaving only input channel 15 connected to output 13. Similarly, +20 volts applied at 17 leaves relay 12 unenergized and input channel 16 connected to output 13.

In place of the relays, similar arrangements may be made utilizing polarizing relays, wire wound cryotrons, etc.

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