Chapter 5 A NALYZING C IRCUIT S TRUCTURES AS L ANGUAGE
نویسنده
چکیده
As a step toward automatic circuit understanding, we present a new method for analyzing circuit structures. We view circuits as sentences, and their elements as words. The electrical behavior and functions are the meaning of the sentences. Circuit structures are defined by a logic grammar called DCSG. A set of grammar rules, when converted into Prolog clauses, forms a logic program which perform top-down parsing. When an unknown circuit is given, this logic program will analyze the circuit and derive a parse tree for the circuit. We first present the basic concepts of the logic programming using examples of circuits, then introduce the logic grammar DCSG (Definite Clause Set Grammar) which was developed for word-order free languages. Circuits are represented as sentences in the language. Circuit structures are defined as grammar rules for functional blocks composing bipolar analog ICs. A given circuit is parsed as a grammatical sentence, ∗Email address: [email protected]
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