This paper reports the complete characterization of additive cellular automata (ACA) that employ xor and xnor logic as the next state function. Compared to linear cellular automata (LCA) [3], which employs only xor logic in its next state function, an ACA display much wider varieties of state transition behavior and enhanced computing power. An analytical framework is developed to characterize ...

Cells define the minimal building blocks of life. How cellular life emerged and evolved implies to cross the boundary between living and nonliving matter. Here we explore this problem by presenting several relevant components of the whole picture involving chemistry, physics and natural selection. Available evidence suggests that the basic logic of life can be understood and eventually translat...

A functioning logic gate based on quantum-dot cellular automata is presented, where digital data are encoded in the positions of only two electrons. The logic gate consists of a cell, composed of four dots connected in a ring by tunnel junctions, and two single-dot electrometers. The device is operated by applying inputs to the gates of the cell. The logic AND and OR operations are verified usi...

In this paper we present a number of image processing applications using coordinate logic filters, which execute coordinate logic operations among the pixels of the image. These filters are very efficient in various 1D, 2D, or higher-dimensional digital signal processing applications, such as noise removal, magnification, opening, closing, skeletonization, and coding, as well as in edge detecti...

The paper contains the description of a database management computer operation system called operation logic. This system is a formal logic with well-deflned formulas as semantic language clauses and with reasoning by means of modus ponens rules. There are four frames-CLAUSE, QUESTION, I:~O~T.~, SYST~. Each of these frames is processed by one program. By means of these programs it can be realiz...

This paper deals with descriptive complexity of picture languages of any dimension by syntactical fragments of existential second-order logic. Two classical classes of picture languages are studied: The class of recognizable picture languages, i.e. projections of languages defined by local constraints (or tilings): it is known as the most robust class extending the class of regular languages to...

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Having a reliable simulation tool for evaluating the performance of each design is indispensable. Designing multiple-valued logic (MVL) systems help to overcome limitations existing in binary systems. Quantum-dot cellular automata (QCA) technology that can be substituted CMOS MVL designs. This paper represents an exquisite software platform designing and simulating circuits which are restricted...