A carry-select adder can be implemented by using single ripple carry adder and an add-one circuit [1] instead of using dual ripple-carry adders. This paper proposes a new add-one circuit using the first zero finding circuit and multiplexers to reduce the area and power with no speed penalty. For bit length n = 64, this new carry-select adder requires 38 percent fewer transistors than the dual r...

This paper describes a new signed-digit full adder (SDFA) circuit consisting of resonant-tunneling diodes (RTDs) and metal-oxide semiconductor field effect transistors (MOSFETs). The design is primarily based on a multiple-valued logic literal circuit that utilizes the folded-back I-V (also known as negative differential-resistance, NDR) characteristics of RTDs to compactly implement its gated ...

In this paper we investigate graph-based minimum-adder integer multipliers using carry-save adders. The previously proposed approaches use carry-propagation adders with two inputs and one output and are not suitable for carry-save adder implementation when we have a single input and a carry-save output of the multiplier. Using carry-save adders avoids carry propagation and will result in a high...

Novel gate level synthesis of robust asynchronous carry lookahead adders based on the notion of section carry is discussed in this paper. For a range of higher order addition operations, the carry lookahead adder is found to exhibit reduced latency than the carry ripple version by 38.6%. However, the latter occupies less area and dissipates less power compared to the former by 37.8% and 17.4% r...

or Classical logic circuits dissipate heat for every bit of information that is lost. Information is lost when the input vector cannot be recovered from its corresponding output vector. Reversible logic circuit implements only the functions having one-to-one mapping between its input and output vectors and therefore naturally takes care of heating. Reversible logic design becomes one of the pro...

Adders are used in processing units such as Arithmetic and Logic Units (ALUs) an essential building block, many blocks of microprocessor chips critical path, adders occupy important place. Hence reducing power, area increasing the speed significantly important. This paper proposes a modified structure Carry Skip Adder (CSKA) with reduction consumption power without affecting when compared conve...

In this paper, we propse 16-bit sparse tree RSFQ adder (Rapid single flux quantam), kogge-stone adder, carry lookahead adder. In general N-bit adders like Ripple carry adder s(slow adders compare to other adders), and carry lookahead adders(area consuming adders) are used in earlier days. But now the most of industries are using parallel prefix adders because of their advantages compare to kogg...

To perform fast addition operation, CSLA is one of the fastest adders used in many dataprocessing processors. There is further scope of improving the performance parameters of CSLA. This paper provides a comparative analysis of CSLA and reviews about various proposed schemes used to reduce the delay time, area occupied and power consumption in CSLA.