Browse Prior Art Database

PLA Binary and BCD Adder

IP.com Disclosure Number: IPCOM000055157D
Original Publication Date: 1980-Jun-01
Included in the Prior Art Database: 2005-Feb-13

Publishing Venue

IBM

Related People

Authors:
Barrs, JW Minnich, WD Moore, VS Rhodes, JC Stahl, WL [+details]

Abstract

Binary coded decimal (BCD) numbers are represented by one or more four-bit digits. BCD addition is usually implemented by performing a binary addition of two BCD numbers and adjusting the binary result to obtain a correct BCD sum. This adjusting of the result requires multiple additions and comparisons, thus slowing the BCD addition implementation.