Browse Prior Art Database

N-Valued Logic Circuit

IP.com Disclosure Number: IPCOM000097625D
Original Publication Date: 1961-Mar-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Baskin, HB: AUTHOR

Abstract

The N-valued logic circuit is used as an analog to digital converter. Two series connected tunnel diodes 11 in each negative resistance circuit 12 provide dual valleyed responsive curves. These overlap each other by an amount dependent upon the bias voltage E applied to circuits 12. Although the curves intersect at five points, three of these points 1, 3 and 5 are stable. The remainder occur at negative resistance regions.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

N-Valued Logic Circuit

The N-valued logic circuit is used as an analog to digital converter. Two series connected tunnel diodes 11 in each negative resistance circuit 12 provide dual valleyed responsive curves. These overlap each other by an amount dependent upon the bias voltage E applied to circuits 12. Although the curves intersect at five points, three of these points 1, 3 and 5 are stable. The remainder occur at negative resistance regions.

The input signals are combined by a network of resistors 13 and the resultant signal causes the circuits to assume one of its three stable states. This provides a ternary output whose value depends upon the amplitude and polarity of the applied input signals. The circuits 12 need not include series connected tunnel diodes but may include any suitable non-linear, two terminal composite elements.

The D. C. levels applied to the negative resistance circuits 12 need not be equal and may be replaced by gate voltages. This circuit may also be used for 3- valued storage and to perform other logic operations. Additional non-linear elements may be used in the negative resistance circuits 12 to obtain higher order (N>3) logic circuits.

1

Page 2 of 2

2

[This page contains 2 pictures or other non-text objects]