Design of XS-3 Adder and Subtractor Using IC 7483
Introduction Xs-3 (Excess-3) code is a non-weighted BCD code obtained by adding 3 to the decimal digit. It is widely used in digital systems because it is self-complementing. This project implements an XS-3 adder/subtractor circuit using digital ICs to perform addition and subtraction of decimal numbers represented in XS-3 format. Objective o Design Xs-3 Adder and Subtractor circuit using digital logics o Take input in decimal form o Show result output on 7 segment displays Design Concept and Implementation Xs-3 Adder Subtractor circuit is based on basic algorithm of xs-3 addition and subtraction. In Xs-3 addition we convert decimal numbers into BCD adds 3 into each digit before writing; then we do simple BCD addition but if carry is generated then we add 3 (0011) into that nibble if carry is not generated then we subtract 3 (1101) from that nibble. In this project we have made 8-bit Adder s...