Two's Complement Binary Addition

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    Addition Binary
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Discussion Overview

The discussion revolves around the addition of binary numbers, specifically in the context of two's complement notation. Participants explore how binary addition works and the implications of carrying in the addition process.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant presents binary addition examples and questions why a specific addition does not yield an expected result.
  • Another participant seeks clarification on whether the notation being used is indeed two's complement.
  • Several posts express frustration over the handling of previous responses and the importance of maintaining the integrity of the discussion thread.
  • A participant claims to have solved the problem independently but acknowledges the need for clarity in questions to facilitate better assistance.
  • Discussion includes reflections on the etiquette of posting and responding in forums, emphasizing the value of clear communication.

Areas of Agreement / Disagreement

There is no consensus on the initial question regarding binary addition, as participants express differing views on the clarity of the problem and the responses provided. The discussion also highlights a disagreement about the appropriateness of certain responses and the etiquette of editing posts.

Contextual Notes

Participants note that the initial question may lack clarity, which affects the ability to provide accurate help. There is also mention of forum rules regarding post editing and the importance of maintaining context for future readers.

Who May Find This Useful

This discussion may be useful for individuals interested in binary arithmetic, two's complement representation, and forum etiquette in technical discussions.

shamieh
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I understand


1 0 1 0
+1 1 0 1
_________

=0 0 0

1 0 1 0
1 1 0 1
________
0 1 1 1

which becomes 1000

BUT, how does

1 0 1 0
+0 0 1 0
_________

not become
1 0 1 0

1 0 1 0
+ 0 0 1 0
___________
?
 
Last edited by a moderator:
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Re: Addition

We need more information. My first guess was that this was binary addition, but then (1010)+ (1101)= 10111 and (1010)+ (0010)= 1100. Is this a "twos complement" notation?
 
Re: Addition

Solved
 
Last edited:
Re: Addition

shamieh said:
Solved

Please DO NOT remove content from a post after help has been given. This devalues a topic, and voids the time given by the people trying to help.

This is prohibited by MHB rule #7:

Do not edit or delete questions after getting help. When a user edits or deletes a question after getting help, the context of the help is subverted and the thread becomes difficult for other members to follow. Moderators will close threads vandalised in this way, restore the deleted question, and the infract the offending member. The material posted on MHB is a body of knowledge that is a valuable resource for everyone. It is unacceptable to vandalize this resource. Note that a member who deletes a question after getting help casts suspicion of cheating upon themselves. Be careful what you post. Once you post a question or information, it will remain viewable to all members of the public - this includes all staff and students of the institute at which you may study - and may show up on search engines such as Google. It is good etiquette, if you mark your thread as [SOLVED], to post your solution so that others searching MHB will be able to see the solution, and not waste their search time.

I am using discretion here to not lock the topic nor issue an infraction, as I feel you were simply not aware of this policy, nor are you trying to cheat.
 
Re: Addition

Lol HallsofIvy provided no help whatsoever. He was just asking me what I was actually asking. That's why i put solved. I figured out the problem by myself. But I will take note of this rule and adhere to it for the future.

-Sham
 
Re: Addition

shamieh said:
...HallsofIvy provided no help whatsoever. He was just asking me what I was actually asking. That's why i put solved. I figured out the problem by myself. But I will take note of this rule and adhere to it for the future.

-Sham

When a question is unclear, then a good helper will ask for clarification...and this is actually an attempt or effort made to help, because before someone can offer good help, they must understand exactly what is being asked. HallsofIvy has a lot of experience giving help on math forums and so he knows it is better to get clarification than to try to give help based on assumption and interpretation. This can lead to wasted time and effort...something I learned the hard way. :D

It also help make MHB a more informative place, since future readers of the topic will also have no doubt about what is being discussed.
 

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