Boots – shoes – and leggings
Patent
1981-09-08
1983-11-22
Zache, Raulfe B.
Boots, shoes, and leggings
G06F 700
Patent
active
044173059
ABSTRACT:
A method for evaluating boolean expressions includes steps of forming a first vector for selecting and conditioning the boolean variables prior to their evaluation and forming a second vector for specifying logical AND and OR operations in the normal form of the boolean expression. Evaluation of the boolean expression is then performed by translating the first vector using the boolean variables as a translate table. The result of the translation is logically combined with the second vector using an exclusive OR function. The result of the exclusive OR operation is translated with and upon itself and the state of the last position of the result of this translation is the result of the evaluation of the boolean expression.
REFERENCES:
patent: 4001789 (1977-01-01), Sweet
patent: 4120043 (1978-10-01), Su
patent: 4165534 (1979-08-01), Dummermuth et al.
IBM Technical Disclosure Bulletin-Iterative Common Truth Set Detection Mechanism for Boolean Functin Satisfiability Recognition, Jun. 1974 vol. 17 No. 1 pp. 66-69.
IBM Technical Disclosure Bulletin-Matrix Method of Modifying Logical Expressions, May 1976, vol. 18 No. 12 pp. 3958-3963.
IBM Technical Disclosure Bulletin-Boolean Analysis Approach to Functional Macro Generation, Jun. 1977, vol. 20 No. 1 pp. 61-62.
International Business Machines - Corporation
Voss Donald F.
Zache Raulfe B.
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