How do we know that number is +ve or -ve

Discussion in 'General Electronics Chat' started by *.*.*AnUm*.*.*, Apr 21, 2015.

  1. *.*.*AnUm*.*.*

    Thread Starter New Member

    Apr 21, 2015
    16
    0
    Hi,

    Please share with me, how we know that number representing in binary is negative or positive ?

    Thanks :)
     
  2. MikeML

    AAC Fanatic!

    Oct 2, 2009
    5,450
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    Ones Complement or Two's Complement?
     
  3. AnalogKid

    Distinguished Member

    Aug 1, 2013
    4,542
    1,251
    By convention and in context. A string of 8 bits can represent a letter in any of 50 alphabets, a number (positive, negative, real imaginary), or something not related to language. Three common ways to represent negative real numbers are sign-plus, one's-compliment, and two's-compliment. Search any of these terms or look in Wikipedia.

    ak
     
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