新型BCD加法器及其可逆逻辑实现

New BCD Adders and Their Reversible Logic Implementation

可逆逻辑是最近几年迅速发展起来的新兴研究领域,由于它在传递信息时能减少能量损耗而引起各方面越来越多的关注。该文设计了一种新型的4×4可逆逻辑门——NC门,该门能够独立实现可逆BCD溢出检测逻辑电路。同时,借助作者曾经设计的4×4可逆加法电路——ZS门,设计出一种新型可逆BCD加法电路。设计的电路与以往的相比,无论是在门的数量上还是在垃圾输出的数量上都达到最优的效果。

Reversible logic is a new research area that has developed rapidly in recent years.It has received great attention in all aspects due to their ability to reduce the power dissipation.This paper proposes a new re-versible logic gate—NC gate.This gate can independently complete Binary Coded Decimal（BCD）adder over-flow detection logic.Meanwhile,with 4×4 reversible adder circuits—ZS gate which was designed by the au-thor,a new reversible BCD adder is designed in this paper.The proposed reversible BCD adder is optimized in terms of number of reversible gates and garbage outputs compared to the previous counterparts.