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liliy
 3 years ago
how do u represent negative numbers in binary?
liliy
 3 years ago
how do u represent negative numbers in binary?

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MaryMarvel
 3 years ago
Best ResponseYou've already chosen the best response.0it depends on how you want to do it... For example you can write 0000 0001 which is 1

MaryMarvel
 3 years ago
Best ResponseYou've already chosen the best response.0or you can use two's complement

eSpeX
 3 years ago
Best ResponseYou've already chosen the best response.0Two's complement or a sign flag.

KonradZuse
 3 years ago
Best ResponseYou've already chosen the best response.1normally the left most bit represents positive or negative, never have seen a 00001 before.

KimoKiko
 3 years ago
Best ResponseYou've already chosen the best response.1If you're asking about how computers represent negative numbers in binary, then it's, as @MaryMarvel stated, by using the two's complement notation. Two's Complement Notation is used to represent signed binary numbers. The Two's Complement of a number is all its bits reversed, plus one. (i.e: The Two's Complement of A is NOT A + 1) So 50 for example is represented as follows: 11001110 The Leftmost bit is the sign bit, when it is 1 the number is negative. So how to convert 11001110 to its decimal form?! It's done as follows: 1st) Get the two's complement of it, that is: 00110001 + 1 = 00110010 2nd) if you convert 00110010 to its decimal form you'll get 50 and since the number is negative then the answer is 50 hope you got it

liliy
 3 years ago
Best ResponseYou've already chosen the best response.0you said 50 is : 11001110, how do you know that that number in binary isnt realy 206? how do u know that its a negative number... @KimoKiko

KonradZuse
 3 years ago
Best ResponseYou've already chosen the best response.1It all depends on if you are using signed or unsigned bits.

eSpeX
 3 years ago
Best ResponseYou've already chosen the best response.0The 50 example is using twos complement: http://en.wikipedia.org/wiki/Two%27s_complement You know the convention before you work it, signed bits or twos complement.

liliy
 3 years ago
Best ResponseYou've already chosen the best response.0oh, u know if ur dealing with a neg or pos number... its not just like , u see 1's an 0's and u need to find the value... bec that could be hard., right?

KonradZuse
 3 years ago
Best ResponseYou've already chosen the best response.1You should be told if you're dealing with an unsigned or signed number. If signed then it will be half of an unsigned. I.E., a byte is 256 bits, so a signed byte would be 128 to 127. An unsigned would be 0255.
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