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    Wyświetlanie 1-6 z 6
    Tytuł:
    Graphical Method of Reversible Circuits Synthesis
    Autorzy:
    Skorupski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/226489.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    reversible logic
    reversible circuits
    reversible gates
    Toffoli gates
    Opis:
    This paper presents a new approach to designing reversible circuits. Reversible circuits can decrease energy dissipation theoretically to zero. This feature is a base to build quantum computers. The main problem of reversible logic is designing optimal reversible circuits i.e. circuits with minimal gates number implementing the given reversible function. There are many types of reversible gates. Most popular library is a set of three types of gates so called CNT (Control, NOT and Toffoli). The method presented in this paper is based only on the Toffoli gates. A graphical representation of the reversible function called s-maps is introduced in the paper. This representation allows to find optimal reversible circuits. The paper is organized as follows. Section 1 recalls basic concepts of reversible logic. In Section 2 a graphical representation of the reversible functions is presented. Section 3 describes the algorithm whereby all optimal solutions of the given function could be obtained.
    Źródło:
    International Journal of Electronics and Telecommunications; 2017, 63, 3; 235-240
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Method of Reversible Circuits Design with One-gate Prediction
    Autorzy:
    Skorupski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/226132.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    reversible logic
    reversible circuits
    reversible gates
    CNT set of the gates
    Opis:
    This paper presents an original method of designing reversible circuits. This method is destined to most popular gate set with three types of gates CNT (Control, NOT and Toffoli). The presented algorithm based on graphical representation of the reversible function is called s-maps. This algorithm allows to find optimal or quasi-optimal reversible circuits. The paper is organized as follows. Section 1 recalls basic concepts of reversible logic. Especially the cascade of the gates as realization of reversible function is presented. In Section 2 there is introduced a classification of minterms distribution. The s-maps are the representation of the reversible functions where the minterms distribution is presented. The choice of the first gate in the cascade depends on possibility of improving the distribution. Section 3 describes the algorithm, namely how to find the optimal or quasi-optimal solutions of the given function.
    Źródło:
    International Journal of Electronics and Telecommunications; 2018, 64, 4; 535-540
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis of Generalised Threshold Gates and Multi Threshold Threshold Gates
    Autorzy:
    Nikodem, M.
    Bawiec, M. A.
    Biernat, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/227258.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    threshold gates
    synthesis
    Boolean functions
    MTTG
    GTG
    Opis:
    This paper presents synthesis algorithms for Generalised and Multi Threshold Threshold Gates. Both algorithms can be applied to generate circuit structures for arbitrary Boolean functions. We present gate's formal models, synthesis algorithms and complexity estimations of the resulting structures.
    Źródło:
    International Journal of Electronics and Telecommunications; 2012, 58, 1; 49-54
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Algorithm for Reversible Circuits Synthesis
    Autorzy:
    Skorupski, Andrzej
    Gracki, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/226226.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    reversible logic
    reversible circuits
    reversible gate
    CNT set of the gates
    Opis:
    In this paper the new synthesis method for reversible networks is proposed. The method is suitable to generate optimal circuits. The examples will be shown for three variables reversible functions but the method is scalable to larger number of variables. The algorithm could be easily implemented with high speed execution and without big consuming storage software. Section 1 contains general concepts about the reversible functions. In Section 2 there are presented various descriptions of reversible functions. One of them is the description using partitions. In Section 3 there are introduced the cascade of the reversible gates as the target of the synthesis algorithm. In order to achieve this target the definitions of the rest and remain functions will be helpful. Section 4 contains the proposed algorithm. There is introduced a classification of minterms distribution for a given function. To select the successive gates in the cascade the condition of the improvement the minterms distribution must be fulfilled. Section 4 describes the algorithm how to improve the minterms distributions in order to find the optimal cascade. Section 5 shows the one example of this algorithm.
    Źródło:
    International Journal of Electronics and Telecommunications; 2020, 66, 2; 281-286
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Transforming Method Between Two Reversible Functions
    Autorzy:
    Skorupski, Andrzej
    Gracki, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/226430.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    reversible logic
    reversible circuits
    reversible gate
    CNT set of the gates
    Opis:
    This paper presents an original method of designing some special reversible circuits. This method is intended for the most popular gate set with three types of gates CNT (Control, NOT and Toffoli). The presented algorithm is based on two types of cascades with these reversible gates. The problem of transformation between two reversible functions is solved. This method allows to find optimal reversible circuits. The paper is organized as follows. Section 1 and 2 recalls basic concepts of reversible logic. Especially the two types of cascades of reversible function are presented. In Section 3 there is introduced a problem of analysis of the cascades. Section 4 describes the method of synthesis of the optimal cascade for transformation of the given reversible function into another one.
    Źródło:
    International Journal of Electronics and Telecommunications; 2019, 65, 1; 33-38
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Basic Logic Gates in Two Dimensional Photonic Crystals for All Optical Device Design
    Autorzy:
    Sonth, Mahesh V
    Srikanth, Gimmadi
    Agrawal, Pankaj
    Premalatha, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1844637.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    basic gates
    photonic crystals
    finite difference time domain
    plane wave expansion
    photonic band gap
    Opis:
    The research carried out in the field of optics and photonics with an idea to design and develop the all optical logic devices in the fascinating material known as photonic crystals (PhCs). The structural investigation reveals that the two dimensional (2-D) PhCs is more suitable for fabrication of optoelectronic components. In this article we have designed basic logic gates in 2-D PhCs as they are the building blocks for the construction of optical devices and in these, refractive index is periodically modulated with the wavelength. The understanding of light behaviour in complex PhCs helps in creating photonic band gap (PBG) that can prevent light of certain wavelength propagating in crystal lattice structure. For the selected geometry structure, three PBG bands will exists out of which two of them are transverse electric (TE) and one is transverse magnetic (TM) mode. The PBG bands in the TE mode ranges from 0.31( α λ ) to 0.46( α λ ), 0.61( α λ ) to 0.63( α λ ) and TM mode ranges from 0.86( α λ ) to 0.93( α λ ). The free space wavelength of 1550 nm is set for the finite difference time domain (FDTD) simulation of the structure. The response time and computational overhead required for the proposed OR gate is 0.128ps and 4.4MB is obtained. Also we calculated the extinction ratio for AND gate and NOT gate as 6.19 dB and 10.21 dB respectively.
    Źródło:
    International Journal of Electronics and Telecommunications; 2021, 67, 2; 247-261
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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