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Compared with the recently reported designs in the literature, it is observed that the quantum cost of the proposed [Formula: see text]-flip flops is decreased by more than 28% with a cell count of 34, which in turn defines the low area too. Also, latency of the same is reduced by one-fourth with a value of [Formula: see text] s. As far as the sequence detector is concerned, it is smaller in size at 0.16[Formula: see text][Formula: see text]m<jats:sup>2<\/jats:sup> than the existing sequential circuits with a reduction in area and quantum cost by 30%. Further, from the bit stream it detects, the proposed sequence detector can also be used as negative pulse detector and interrupt handler circuit in the future QCA-based digital systems to detect the external interrupts. <\/jats:p>","DOI":"10.1142\/s0218126623500822","type":"journal-article","created":{"date-parts":[[2022,9,12]],"date-time":"2022-09-12T01:36:51Z","timestamp":1662946611000},"source":"Crossref","is-referenced-by-count":1,"title":["QCA-Based Pulse\/Bit Sequence Detector Using Low Quantum Cost D-Flip Flop"],"prefix":"10.1142","volume":"32","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0933-5136","authenticated-orcid":false,"given":"Enaul Haq","family":"Shaik","sequence":"first","affiliation":[{"name":"Department of Electronics and Communication Engineering, Vasireddy Venkatadri Institute of Technology, Nambur 522508, Andhra Pradesh, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Balagopendra Rao","family":"Mannava","sequence":"additional","affiliation":[{"name":"Department of Electronics and Communication Engineering, Vasireddy Venkatadri Institute of Technology, Nambur 522508, Andhra Pradesh, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mahaboob Subani","family":"Shaik","sequence":"additional","affiliation":[{"name":"VTU Research Center, Department of Electronics and Communication Engineering, SJC Institute of Technology, Chickballapur 562101, Karnataka, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nakkeeran","family":"Rangaswamy","sequence":"additional","affiliation":[{"name":"Department of Electronics Engineering, School of Engineering and Technology, Pondicherry University, Kalapet 605014, Pondicherry, India"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"219","published-online":{"date-parts":[[2022,10,13]]},"reference":[{"key":"S0218126623500822BIB001","doi-asserted-by":"crossref","first-page":"35","DOI":"10.1109\/MSPEC.2013.6607013","volume":"50","author":"Seabaugh A.","year":"2013","journal-title":"IEEE Spectr."},{"key":"S0218126623500822BIB002","volume-title":"Studies in Computational Intelligence","volume":"599","author":"Sridharan K.","year":"2015"},{"volume-title":"Technology Report","year":"2013","author":"International Technology Report for Semiconductors (ITRS)","key":"S0218126623500822BIB003"},{"key":"S0218126623500822BIB004","doi-asserted-by":"crossref","first-page":"1147","DOI":"10.1016\/S0016-0032(97)00041-0","volume":"334","author":"Porod W.","year":"1997","journal-title":"J. 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