Accession Number : ADD002342

Title :   Binary Adder with Fast Ripple Carry.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Pridgen,Janius I

Report Date : 19 Jan 1976

Pagination or Media Count : 11

Abstract : The patent application describes a binary adder using a sequence of alternating pairs of stages. Each stage has a full adder including an exclusive NOR circuit and a fast ripple carry gate. The carry in signal is fed to a logic gating circuit which becomes a sum output or is inverted and then becomes a sum output. The necessity for inversion is dependent upon gating signals applied to a pair of CMOS transistors, which are derived by the exclusive NOR circuit that is connected to the addend and augend inputs.

Descriptors :   *Binary processors, Patents, Digital computers, Logic circuits, Arithmetic units

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE