منابع مشابه
On Fast Carry Select Adders
Abstract -This paper presents an architecture for a high-speed carry select adder with very long bit lengths utilizing a conflict-free bypass scheme. The proposed scheme has almost half the number of transistors and is faster than a conventional carry select adder. A comparative study is also made between the proposed adder and a Manchester carry chain adder which shows that the proposed scheme...
متن کاملRobust Asynchronous Carry Lookahead Adders
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...
متن کاملOn-line Detection of Faults in Carry-Select Adders
This paper proposes an architecture for implementing a self-checking 4-bit carry select adder that can be extended to any n-bit addition. The overhead is directly proportional to the number of transistors in the adder.
متن کاملDelay Optimisation in High - Performance Carry - Select Adders
This paper analyses techniques to measure the delay of 64 bit and 128-bit carry select adders .This is used for high-performance and low-power applications. It is introduced to work at a lower time delay than that required by a Ripple Carry Adder. This paper uses a very simple and efficient gate-level modification technique to significantly reduce the delay of the CSA. The proposed design has r...
متن کاملArea/latency optimized early output asynchronous full adders and relative-timed ripple carry adders
This article presents two area/latency optimized gate level asynchronous full adder designs which correspond to early output logic. The proposed full adders are constructed using the delay-insensitive dual-rail code and adhere to the four-phase return-to-zero handshaking. For an asynchronous ripple carry adder (RCA) constructed using the proposed early output full adders, the relative-timing as...
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ژورنال
عنوان ژورنال: Engineering Science and Technology, an International Journal
سال: 2017
ISSN: 2215-0986
DOI: 10.1016/j.jestch.2017.02.003