Reduced Binary Circuits

Reduced Binary Circuits

Reduced Binary Circuit stellen eine Möglichkeit dar, digitale Schaltkreise mit wenig Overhead kompakt zu repräsentieren. Resultat ist ein gerichteter azyklischer Graph G bestehend aus Knoten und Kanten.

Interne Knoten repräsentieren einen binären Operator aus der Menge { \land , \lor, \Leftrightarrow } und besitzen jeweils zwei Kinder. Blätter hingegen werden mit konstanten Wahrheitswerten {TRUE,FALSE} beschrieben oder durch eine Variable v ε VAR, wobei VAR eine beliebige Menge boolescher Variablen darstellt.

Kanten enthalten ein sign-Attribut, das Negierung des Targets, des Zielknotens abgibt.

Kompression wird dabei erreicht, indem zum Einen isomorphe (identische) Teilstrukturen mittels einer Hash-Funktion erfasst und nur einmal explizit in der Datenstruktur repräsentiert werden, zum Anderen werden konstante Werte erfasst und „gekürzt“, beispielsweise wird (b  \wedge TRUE) dargestellt als b.

Quellen

  • P. A. Abdullah, P. Bjesse, N. Een: Symbolic Reachability Analysis based on SAT-Solvers. In: Lecture Notes in Computer Science (LNCS). Band 1785/2000, S. 411–425, ISSN 0302-9743 (Proceedings of the Sixth International Conference on Tools and Algorithms for the Construction and Analysis of Systems (TACAS'00)).

Wikimedia Foundation.

Игры ⚽ Поможем сделать НИР

Schlagen Sie auch in anderen Wörterbüchern nach:

  • Binary decision diagram — In the field of computer science, a binary decision diagram (BDD) or branching program, like a negation normal form (NNF) or a propositional directed acyclic graph (PDAG), is a data structure that is used to represent a Boolean function. On a… …   Wikipedia

  • Binary numeral system — Numeral systems by culture Hindu Arabic numerals Western Arabic (Hindu numerals) Eastern Arabic Indian family Tamil Burmese Khmer Lao Mongolian Thai East Asian numerals Chinese Japanese Suzhou Korean Vietnamese …   Wikipedia

  • Binary-coded decimal — In computing and electronic systems, binary coded decimal (BCD) is a digital encoding method for numbers using decimal notation, with each decimal digit represented by its own binary sequence. In BCD, a numeral is usually represented by four bits …   Wikipedia

  • Binary code — The word Wikipedia represented in ASCII binary. A binary code is a way of representing text or computer processor instructions by the use of the binary number system s two binary digits 0 and 1. This is accomplished by assigning a bit string to… …   Wikipedia

  • Timeline of binary prefixes — This article presents a terminology timeline of binary prefixes.1940s; 1943 1944:*J.W. Tukey coins the word bit as an abbreviation of binary digit . [http://catb.org/ esr/jargon/html/B/bit.html The Jargon File (version 4.4.7)] ] ; 1948:*… …   Wikipedia

  • Digital electronics — Main articles: Electronics and Electronic circuit Digital electronics represent signals by discrete bands of analog levels, rather than by a continuous range. All levels within a band represent the same signal state. Relatively small changes to… …   Wikipedia

  • computer — computerlike, adj. /keuhm pyooh teuhr/, n. 1. Also called processor. an electronic device designed to accept data, perform prescribed mathematical and logical operations at high speed, and display the results of these operations. Cf. analog… …   Universalium

  • History of computing hardware — Computing hardware is a platform for information processing (block diagram) The history of computing hardware is the record of the ongoing effort to make computer hardware faster, cheaper, and capable of storing more data. Computing hardware… …   Wikipedia

  • Propositional formula — In propositional logic, a propositional formula is a type of syntactic formula which is well formed and has a truth value. If the values of all variables in a propositional formula are given, it determines a unique truth value. A propositional… …   Wikipedia

  • Quantum dot cellular automaton — Quantum Dot Cellular Automata (sometimes referred to simply as quantum cellular automata, or QCA) Any device designed to represent data and perform computation, regardless of the physics principles it exploits and materials used to build it, must …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”