eng Science and Education Publishing American Journal of Electrical and Electronic Engineering 2328-7357 2015-03-12 3 1 13 16 10.12691/ajeee-3-1-3 AJEEE2015313 article Parag K. Lala plala@tamut.edu 1 Department of Electrical Engineering, Texas A&M University-Texarkana, Texarkana, USA This paper presents a technique for fast addition of multi-digit BCD numbers. The addition of all columns can be performed simultaneously, and the carry values are utilized only in the final stage of the addition. Thus the traditional carry propagation process is drastically reduced, hence speeding up the addition process. The addition technique is used in the summation of partial products generated during a new multiplication approach proposed in the paper resulting in a faster multiplication. http://pubs.sciepub.com/ajeee/3/1/3/ajeee-3-1-3.pdf 2's complement binary number overflow multi-digit BCD addition partial product