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Re: Let 'em say we're crazy and get to a MINUS million in bi
Posted: January 16th, 2018, 3:47 pm
by spotify95
coleslaw wrote:spotify95 wrote:coleslaw wrote:spotify95 wrote:Binary doesn't use a positive or negative sign - it uses the leading digit as wither 0 (positive) or 1 (negative).
Also remember that Binary only uses 1's or 0's.
You'll need to use 2's Complement to get the binary of negative numbers.
http://en.wikipedia.org/wiki/Two's_complementTo work out 2's compliment, firstly find the binary of the positive number (remember to leave a 0 at the front for the sign)
Then invert all of the digits, and finally add 1 to the result.
Eg: 2 in binary is 010
Invert: 101
2's comp: 110.
Hence -6 in binary:
Positive 6: 0110
Invert: 1001
Add 1: 1010
Why do we need twos complement here? Ones compliment is fine enough for this thread
101100
I've had a look here:
https://www.calvin.edu/academic/rit/web ... gative.htmAnd it states that although neither system is more correct than the other, two's compliment is more often used.
Just having the leading character for the sign (0 for positive, 1 for negative) can be a bit confusing with the positive number that is bigger by a power of 2. But we can convert to standard binary if required (making sure the leading 1 is kept).
101010
From what I remember twos complement is better and used more because it retains consistency with arithmetic and operations. Since this thread is just listing the minus numbers in order it's not really needed and we can just do:
Find the binary number = 10111
Put sign in front = 010111
Invert = 101000 = -23
Okay we can do that then
Whichever method you prefer, is what you can use
100101
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: January 16th, 2018, 4:47 pm
by lucozadesp0rt
100100
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: January 16th, 2018, 4:48 pm
by lucozadesp0rt
100011
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: January 16th, 2018, 4:48 pm
by lucozadesp0rt
100010
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: January 16th, 2018, 4:49 pm
by lucozadesp0rt
100001
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: January 16th, 2018, 4:50 pm
by lucozadesp0rt
100000
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: January 16th, 2018, 4:51 pm
by lucozadesp0rt
1011111 new bit!
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: October 11th, 2019, 10:56 am
by spotify95
1101111.
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: November 5th, 2019, 8:44 am
by unturned_cake
dunno how to 2s complemnt
17)
1101110
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: November 5th, 2019, 8:45 am
by unturned_cake
18)
1101101
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: November 5th, 2019, 8:46 am
by unturned_cake
19)
1101100
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: November 5th, 2019, 8:48 am
by unturned_cake
20)
1101011
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: November 5th, 2019, 8:48 am
by unturned_cake
21)
1101010
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: November 8th, 2019, 11:18 pm
by spotify95
unturned_cake wrote:dunno how to 2s complemnt
17)
1101110
Looks about right
Negative binary is more difficult than positive binary, but I'm sure you'll get it
1101001
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: November 9th, 2019, 9:40 am
by unturned_cake
spotify95 wrote:unturned_cake wrote:dunno how to 2s complemnt
17)
1101110
Looks about right
Negative binary is more difficult than positive binary, but I'm sure you'll get it
1101001
Yeet
thnx
23)
1101000
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: November 9th, 2019, 6:28 pm
by spotify95
unturned_cake wrote:spotify95 wrote:unturned_cake wrote:dunno how to 2s complemnt
17)
1101110
Looks about right
Negative binary is more difficult than positive binary, but I'm sure you'll get it
1101001
Yeet
thnx
23)
1101000
The converter I linked you to also does 2s compliment negative binary
1100111
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: November 11th, 2019, 8:45 am
by unturned_cake
1100110
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: November 11th, 2019, 8:46 am
by unturned_cake
1100101
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: November 11th, 2019, 8:47 am
by unturned_cake
1100100
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: November 11th, 2019, 8:47 am
by unturned_cake
28)
1100011
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: November 11th, 2019, 8:47 am
by unturned_cake
1100010
Re: Let 'em say we're crazy and count to a MINUS million in binary!
Posted: November 11th, 2019, 8:48 am
by unturned_cake
1100001
30