Reversible logic for digital computers

Vilaskumar patil Vilaskumar patil, Veeresh k Veeresh k

At present days , reversible logic circuits have many applications in the field of optical information processing, digital signal processing , nano technology and quantum computing . Reversible logic plays an important role when computations with minimum energy dissipation are considered. The purpose of designing reversible logic is to decrease the number of area, power, garbage outputs , constant inputs, quantum cost, reversible gates, delay and hardware complexity . This paper reveals a review on some reversible logic gates, which is useful in designing more complex systems having reversible circuits and can do execution of more complex operations using quantum computers. In upcoming days digital technology will be using reversible logic gates in order to reduce the propagation delay and power consumption as it provides negligible loss of information in the circuit. Keywords: Reversible Gate, Garbage output, quantum cost, Reversible logic, Power dissipation

Ankur Saxena, Tauheed Khan

Reversible quantum computer is gaining interest for the future computer system. With the advent of quantum computer and reversible logic, design and implementation of all devices has received more attention. BCD digit adder is the basic unit of the more precise decimal computer arithmetic. The research objective is to increase speed of operation for addition of BCD numbers while minimizing the power dissipation by using reversible gates. This paper proposes one new reversible logic gate MAS. The MAS gate can be used as full adder and also reduces the number of garbage outputs. It can also be used as Copying Circuit to increase fan-out because fan-out is not allowed in reversible circuits. This paper also proposes a novel reversible design of 2 digit BCD full adder. The simulation result of 2 digit BCD adder on ModelSim are also included.

Anas N. Al‐Rabadi

Md. Mazder Rahman

Bahijja Yahaya Galadima, Garba Shehu Musa Galadanci, Tijjani Abdulrazak +1 more

In recent years, reversible logic circuits have applications in the emerging field of digital signal processing, optical information processing, quantum computing and nano technology. Reversibility plays an important role when computations with minimal energy dissipation are considered. The main purpose of designing reversible logic is to decrease the number of reversible gates, garbage outputs, constant inputs, quantum cost, area, power, delay and hardware complexity of the reversible circuits. This paper reveals a comparative review on various reversible logic gates. This paper provides some reversible logic gates, which can be used in designing more complex systems having reversible circuits and can execute more complicated operations using quantum computers. Future digital technology will use reversible logic gates in order to reduce the power consumption and propagation delay as it effectively provides negligible loss of information in the circuit. Keywords: Garbage output, Power dissipation, quantum cost, Reversible Gate, Reversible logic,