Browse Prior Art Database

A Plus-One Circuit

IP.com Disclosure Number: IPCOM000097626D
Original Publication Date: 1961-Mar-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 25K

Publishing Venue

IBM

Related People

Yhap, EF: AUTHOR

Abstract

A circuit for adding one to any number can be implemented by the use of Rutz commutating transistors so that the plus one function for any number of digits can be obtained, each digit requiring only one additional device. The relationship that obtains between input and output digits with reference to the drawing is... DCBA =... dcba + 1 where... DCBA and... dcba are in binary.

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A Plus-One Circuit

A circuit for adding one to any number can be implemented by the use of Rutz commutating transistors so that the plus one function for any number of digits can be obtained, each digit requiring only one additional device. The relationship that obtains between input and output digits with reference to the drawing is... DCBA =... dcba + 1 where... DCBA and... dcba are in binary.

The double collector transistor shown in block form at the right is used in the plus one circuit as a two input device which will give two outputs, an Exclusive Or and an And.

The plus one circuit is useful in constructing an address ring where an address must be increased by one sequentially.

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