This project implements a 4-bit Parallel Adder/Subtractor in Verilog using a Ripple Carry Adder (RCA) and logic gates like XOR, AND, and NOT. The design can perform both addition and subtraction based ...

Arithmetic circuits such as the digital adder and subtractor are simple combinational logic. In this lab, students learn to construct a 2-bit full adder/subtractor from basic combinational logic.

Abstract: This paper proposes two novel designs of Adder/Subtractor using reversible logic gates. The first design is an implementation of two's complement Adder/Subtractor suitable for ...