Timeline for What is “two's complement”?
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37 events
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| May 14, 2024 at 1:14 | answer | added | david | timeline score: 3 | |
| Jan 16, 2023 at 0:58 | history | edited | Peter Mortensen | CC BY-SA 4.0 |
Active reading [<https://en.wikipedia.org/wiki/Two%27s_complement> <https://en.wiktionary.org/wiki/Wikipedia#Proper_noun>]. Expanded. Removed meta information (this belongs in comments).
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| Nov 12, 2021 at 4:31 | comment | added | aderchox | A quick mnemonic and also a confusion clearer: Just like the sign magnitude representation, the Two's Complement representation has a "sign bit" too. So to find the value of a two's complement signed (negative, zero, or positive) number, calculate only the sign bit, which is the most significant bit, negatively, and then the rest of the bits will be calculated as usual (positively, as in unsigned encodings). Thanks to Mr.Brayant and Mr.O'Hallaron authors of the amazing book "Computer Systems: A programmer's perspective" (note: this book is much more than just this simple sample). | |
| May 9, 2021 at 3:09 | answer | added | Ivan Yoed | timeline score: 0 | |
| Sep 15, 2020 at 19:45 | comment | added | Charlie Parker |
I think a comment that was helpful to me is that complement is similar to inverse but instead of giving 0 it gives 2^N (by definition) e.g. with 3 bits for the number A we want A+~A=2^N so 010 + 110 = 1000 = 8 which is 2^3. At least that clarifies what the word "complement" is suppose to mean here as it't not just the inverting of the meaning of 0 and 1. Useful MIT video: youtube.com/watch?v=RbJV-g9Lob8
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| Jun 15, 2020 at 9:47 | history | protected | Konrad Rudolph | ||
| Dec 13, 2019 at 17:31 | answer | added | Denis Roosevelt | timeline score: 2 | |
| Oct 26, 2019 at 17:21 | answer | added | Raghu | timeline score: 1 | |
| Aug 8, 2019 at 2:12 | answer | added | Neelabh Mam | timeline score: 3 | |
| Apr 13, 2019 at 23:21 | answer | added | Russ | timeline score: 3 | |
| Feb 15, 2019 at 20:42 | answer | added | ahcox | timeline score: 0 | |
| Jan 7, 2019 at 15:04 | answer | added | user10862846 | timeline score: 0 | |
| Aug 21, 2018 at 16:01 | answer | added | Alister | timeline score: 15 | |
| Oct 16, 2017 at 19:57 | answer | added | K.N. Bhargav | timeline score: 1 | |
| Jan 11, 2017 at 2:21 | history | edited | nbloqs |
Added data-representation tag. I did not remove bit-manipulation but 2's complement is really more about representation.
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| Dec 30, 2016 at 18:31 | answer | added | Charles Thomas | timeline score: 0 | |
| Oct 14, 2016 at 19:06 | answer | added | user779764 | timeline score: 4 | |
| May 10, 2016 at 11:11 | history | edited | Ani Menon | CC BY-SA 3.0 |
Edit to remove irrelevant text in question.
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| Sep 25, 2015 at 17:31 | answer | added | Dmitry | timeline score: -6 | |
| Aug 26, 2015 at 3:50 | answer | added | KyBrooks | timeline score: 3 | |
| Jun 3, 2015 at 5:33 | history | edited | Ely |
It's a binary signed number representation. So I think adding "binary" as a tag would be useful.
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| Nov 26, 2014 at 9:29 | answer | added | Milon | timeline score: 2 | |
| S Jan 19, 2014 at 22:36 | history | suggested | michaelsnowden | CC BY-SA 3.0 |
Fixed some grammar
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| Jan 19, 2014 at 22:34 | review | Suggested edits | |||
| S Jan 19, 2014 at 22:36 | |||||
| Aug 28, 2013 at 19:23 | answer | added | NightSkyCode | timeline score: 4 | |
| Jun 22, 2013 at 19:47 | answer | added | Simon Yundov | timeline score: 24 | |
| Aug 18, 2012 at 20:39 | answer | added | ForDummies | timeline score: 139 | |
| Jun 20, 2012 at 9:10 | answer | added | Edwin Buck | timeline score: 2 | |
| Jun 20, 2012 at 9:04 | history | edited | Francesco | CC BY-SA 3.0 |
minor typos
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| Sep 30, 2010 at 0:09 | history | edited | Timwi | CC BY-SA 2.5 |
edited tags; edited title
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| Sep 13, 2010 at 13:59 | answer | added | evaa | timeline score: 5 | |
| Jul 1, 2009 at 16:01 | vote | accept | Frank V | ||
| Jun 26, 2009 at 19:04 | answer | added | Captain Segfault | timeline score: 16 | |
| Jun 26, 2009 at 15:49 | answer | added | Nosredna | timeline score: 2 | |
| Jun 26, 2009 at 15:48 | answer | added | Vincent Ramdhanie | timeline score: 397 | |
| Jun 26, 2009 at 15:29 | answer | added | lavinio | timeline score: 741 | |
| Jun 26, 2009 at 15:21 | history | asked | Frank V | CC BY-SA 2.5 |