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  2. Plus and minus signs - Wikipedia

    en.wikipedia.org/wiki/Plus_and_minus_signs

    The plus sign (+) and the minus sign (−) are mathematical symbols used to denote positive and negative functions, respectively. In addition, + represents the operation of addition, which results in a sum, while − represents subtraction, resulting in a difference. [1]

  3. Method of complements - Wikipedia

    en.wikipedia.org/wiki/Method_of_complements

    Use the same method to subtract 856 from 1000, and then add a negative sign to the result. Represent negative numbers as radix complements of their positive counterparts. Numbers less than / are considered positive; the rest are considered negative (and their magnitude can be obtained by taking the radix complement). This works best for even ...

  4. Addition - Wikipedia

    en.wikipedia.org/wiki/Addition

    The simplest conception of an integer is that it consists of an absolute value (which is a natural number) and a sign (generally either positive or negative). The integer zero is a special third case, being neither positive nor negative. The corresponding definition of addition must proceed by cases: For an integer n, let |n| be its absolute value.

  5. Sign (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Sign_(mathematics)

    In a signed-digit representation, each digit of a number may have a positive or negative sign. In physics, any electric charge comes with a sign, either positive or negative. By convention, a positive charge is a charge with the same sign as that of a proton, and a negative charge is a charge with the same sign as that of an electron.

  6. Two's complement - Wikipedia

    en.wikipedia.org/wiki/Two's_complement

    Two's complement is the most common method of representing signed (positive, negative, and zero) integers on computers, [1] and more generally, fixed point binary values. Two's complement uses the binary digit with the greatest value as the sign to indicate whether the binary number is positive or negative; when the most significant bit is 1 the number is signed as negative and when the most ...

  7. Talk:Negative number - Wikipedia

    en.wikipedia.org/wiki/Talk:Negative_number

    The resultant sign from multiplication when both are positive or one is positive and the other is negative can be illustrated so long as one uses the positive factor to give the cardinal value to the implied repeated addition or subtraction operation, or in other words, -5 x 2 = -5 + -5 = -10, or 10 ÷ -2 = 10 - 2 - 2 - 2 - 2 - 2 = 0 (the ...

  8. Ones' complement - Wikipedia

    en.wikipedia.org/wiki/Ones'_complement

    Negative zero is easily produced in a ones' complement adder. Simply add the positive and negative of the same magnitude. 0001 0110 22 + 1110 1001 −22 ===== ==== 1111 1111 −0 Negative zero. Although the math always produces the correct results, a side effect of negative zero is that software must test for negative zero.

  9. Signed number representations - Wikipedia

    en.wikipedia.org/wiki/Signed_number_representations

    Negative zero behaves exactly like positive zero: when used as an operand in any calculation, the result will be the same whether an operand is positive or negative zero. The disadvantage is that the existence of two forms of the same value necessitates two comparisons when checking for equality with zero.

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