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  2. Binary code - Wikipedia

    en.wikipedia.org/wiki/Binary_code

    The modern binary number system, the basis for binary code, is an invention by Gottfried Leibniz in 1689 and appears in his article Explication de l'Arithmétique Binaire (English: Explanation of the Binary Arithmetic) which uses only the characters 1 and 0, and some remarks on its usefulness. Leibniz's system uses 0 and 1, like the modern ...

  3. Boolean data type - Wikipedia

    en.wikipedia.org/wiki/Boolean_data_type

    The BIT data type, which can only store integers 0 and 1 apart from NULL, is commonly used as a workaround to store Boolean values, but workarounds need to be used such as UPDATE t SET flag = IIF (col IS NOT NULL, 1, 0) WHERE flag = 0 to convert between the integer and Boolean expression.

  4. Boolean algebra - Wikipedia

    en.wikipedia.org/wiki/Boolean_algebra

    A law of Boolean algebra is an identity such as x ∨ (y ∨ z) = (x ∨ y) ∨ z between two Boolean terms, where a Boolean term is defined as an expression built up from variables and the constants 0 and 1 using the operations ∧, ∨, and ¬. The concept can be extended to terms involving other Boolean operations such as ⊕, →, and ≡ ...

  5. ABC Chinese–English Dictionary - Wikipedia

    en.wikipedia.org/wiki/ABC_ChineseEnglish...

    The first edition ABC ChineseEnglish Dictionary (1996) was incorporated into Wenlin 2.0 with over 74,000 entries (1998); the second ABC ChineseEnglish Comprehensive Dictionary (2003) went into Wenlin 3.0 with over 196,000 entries (2002); and the third edition ABC EnglishChinese, ChineseEnglish Dictionary (2010) was incorporated into ...

  6. Boolean - Wikipedia

    en.wikipedia.org/wiki/Boolean

    Boolean domain, a set consisting of exactly two elements whose interpretations include false and true; Boolean circuit, a mathematical model for digital logical circuits. Boolean expression, an expression in a programming language that produces a Boolean value when evaluated; Boolean function, a function that determines Boolean values or operators

  7. Names for the number 0 - Wikipedia

    en.wikipedia.org/wiki/Names_for_the_number_0

    The character 零 (pinyin: líng) means "zero" in Chinese, although 〇 is also common. Etymologically 零 is an onomatopoeic word for "light rain". The upper part of the character is 雨, meaning "rain", and the lower part is 令 (lìng), for the sound. [1] Czech: nula Dutch: nul /nyl/ English: zero: There are many other names: French: zéro ...

  8. Boolean domain - Wikipedia

    en.wikipedia.org/wiki/Boolean_domain

    In computer science, a Boolean variable is a variable that takes values in some Boolean domain. Some programming languages feature reserved words or symbols for the elements of the Boolean domain, for example false and true. However, many programming languages do not have a Boolean data type in the strict sense.

  9. Boolean-valued function - Wikipedia

    en.wikipedia.org/wiki/Boolean-valued_function

    A Boolean-valued function (sometimes called a predicate or a proposition) is a function of the type f : X → B, where X is an arbitrary set and where B is a Boolean domain, i.e. a generic two-element set, (for example B = {0, 1}), whose elements are interpreted as logical values, for example, 0 = false and 1 = true, i.e., a single bit of information.