Design of Digital Arithmetic Circuit Using Excess-3 Code & 9’S Complement Method (original) (raw)

2014, IOSR Journal of Electronics and Communication Engineering

This paper presents a technique to design an Excess-3 Arithmetic circuit capable of doing addition and subtraction operation using 9's complement method. The explored method of the circuit of 9's complement method along with the conventional adder-subtractor composite unit achieves the design to get perfect result. By this circuit we can add or subtract any two numbers with any sign in an efficient way by using Excess-3 arithmetic process without employing the human brain.