Definitions for subtractor
sub·trac·tor

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1. Subtractor

   In electronics, a subtractor – a digital circuit that performs subtraction of numbers – can be designed using the same approach as that of an adder. The binary subtraction process is summarized below. As with an adder, in the general case of calculations on multi-bit numbers, three bits are involved in performing the subtraction for each bit of the difference: the minuend ( X i {\displaystyle X_{i}} ), subtrahend ( Y i {\displaystyle Y_{i}} ), and a borrow in from the previous (less significant) bit order position ( B i {\displaystyle B_{i}} ). The outputs are the difference bit ( D i {\displaystyle D_{i}} ) and borrow bit B i + 1 {\displaystyle B_{i+1}} . The subtractor is best understood by considering that the subtrahend and both borrow bits have negative weights, whereas the X and D bits are positive. The operation performed by the subtractor is to rewrite X i − Y i − B i {\displaystyle X_{i}-Y_{i}-B_{i}} (which can take the values -2, -1, 0, or 1) as the sum − 2 B i + 1 + D i {\displaystyle -2B_{i+1}+D_{i}} . D i = X ⊕ Y i ⊕ B i {\displaystyle D_{i}=X_{}\oplus Y_{i}\oplus B_{i}} B i + 1 = X i < ( Y i + B i ) {\displaystyle B_{i+1}=X_{i}<(Y_{i}+B_{i})} Subtractors are usually implemented within a binary adder for only a small cost when using the standard two's complement notation, by providing an addition/subtraction selector to the carry-in and to invert the second operand. − B = B ¯ + 1 {\displaystyle -B={\bar {B}}+1} (definition of two's complement notation) A − B = A + ( − B ) = A + B ¯ + 1 {\displaystyle {\begin{alignedat}{2}A-B&=A+(-B)\\&=A+{\bar {B}}+1\\\end{alignedat}}}

WikidataRate this definition:0.0 / 0 votes

1. Subtractor

   In electronics, a subtractor can be designed using the same approach as that of an adder. The binary subtraction process is summarized below. As with an adder, in the general case of calculations on multi-bit numbers, three bits are involved in performing the subtraction for each bit of the difference: the minuend, subtrahend, and a borrow in from the previous bit order position. The outputs are the difference bit and borrow bit . The subtractor is best understood by considering that the subtrahend and both borrow bits have negative weights, whereas the X and D bits are positive. The operation performed by the subtractor is to rewrite as the sum . Subtractors are usually implemented within a binary adder for only a small cost when using the standard two's complement notation, by providing an addition/subtraction selector to the carry-in and to invert the second operand.

How to pronounce subtractor?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say subtractor in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of subtractor in Chaldean Numerology is: 7

2. Pythagorean Numerology

   The numerical value of subtractor in Pythagorean Numerology is: 2

References

1. ^ Wikipedia
   https://en.wikipedia.org/wiki/Subtractor
2. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=subtractor