Lujayne Posted December 7, 2002 Share Posted December 7, 2002 Does anyone know binary arithmatic? n_n If you do, you would be an amazing help! I've got this final exam in my computers class, see, and I have to know how to add *big* binary numbers - heck, I can't even count to 2. ¬_¬ I need to add these numbers: 01010101 + 00010111 + 000111011=? Who wants to be a hero?? ;_; Link to comment Share on other sites More sharing options...
Wacky_Baccy Posted December 7, 2002 Share Posted December 7, 2002 You want the answer in decimal, not BCD or Hex or something, right? In decimal, it's 135, I think... Lemme triple check ^_^ [Edit] Eek, I knew I was tired, but to get it this wrong is terrible x.x It's 167, not 135 - I accidentally interpreted a 64 as a 32 Link to comment Share on other sites More sharing options...
Lujayne Posted December 7, 2002 Author Share Posted December 7, 2002 Well, I don't know about that first stuff you said... n_n So it's 167? What's that in binary?? O_O The exam is mult. choice, and I think the answer will be in binary. The thing I don't get is how can a number start with zero? Like, doesn't counting go like this: 1, 10, 11, 100, 101, 110, 111, etc? Was that right? O_o But... how can a number start with "000..."?? Link to comment Share on other sites More sharing options...
Wacky_Baccy Posted December 7, 2002 Share Posted December 7, 2002 Binary has to be written in reverse - I *think* I could explain, but it'd take me ages and wouldn't help, so I won't for now In this situation of binary addition, if a number 'starts' with zeros, you can totally disregard them - until you get to ones... The zeros are mostly to confuse students and to make sure they know what they're doing....... 167 in binary is... *thinks* 1 2 4 8 16 32 64 128 1 1 1 0 0 1 0 1 It's 10100111 ^_^ Link to comment Share on other sites More sharing options...
Skate Boy Posted December 8, 2002 Share Posted December 8, 2002 Wasn't that in a Star Trek: TNG episode? Link to comment Share on other sites More sharing options...
Lujayne Posted December 8, 2002 Author Share Posted December 8, 2002 Originally posted by Wacky_Baccy Binary has to be written in reverse - 167 in binary is... *thinks* 1 2 4 8 16 32 64 128 1 1 1 0 0 1 0 1 It's 10100111 ^_^ Well, even though I still don't see how you got 167 out of those numbers, I thank you all for the answer anyway! n_n And yes it's true, I did post this at another forum, and they all came up with the same answer too! Woohoo! So that means it's definitely right. n_n I love you all! Link to comment Share on other sites More sharing options...
Wacky_Baccy Posted December 8, 2002 Share Posted December 8, 2002 LOL Glad to be of help Link to comment Share on other sites More sharing options...
Redwing Posted December 8, 2002 Share Posted December 8, 2002 ~L!!! You need to get your post count fixed too I see Post in the Help/Feedback forum ^_^ Link to comment Share on other sites More sharing options...
Rogue15 Posted December 9, 2002 Share Posted December 9, 2002 My post count got added back. my 2 other accounts need a fix though, but i forgot how many each had. Link to comment Share on other sites More sharing options...
Lujayne Posted December 9, 2002 Author Share Posted December 9, 2002 Hey, what happened to all my posts? O_o K, I'm just gonna do some silmpe ones to make sure I understand; can someone tell me if these are right? O_o 1000 1111 +1111 +1111 ______ ______ 10111 11110 :? Oui? Link to comment Share on other sites More sharing options...
Wacky_Baccy Posted December 9, 2002 Share Posted December 9, 2002 Posted by Lujayne Hey, what happened to all my posts? O_o They re-counted them and screwed up... Go to the Feedback forum and ask them to put it back to what it was K, I'm just gonna do some silmpe ones to make sure I understand; can someone tell me if these are right? O_o 1000 1111 +1111 +1111 ______ ______ 10111 11110 :? Oui? 1) Yes 2) Yes Link to comment Share on other sites More sharing options...
Lujayne Posted December 9, 2002 Author Share Posted December 9, 2002 Oh my goodness, kill me. Not cuz o' the answers, I'm happy I got those right. (*"woo"s* weakly) but I just realised I posted the wrong number to be added. -_- I put an extra 0 at the start of the 3rd number. Does that make a difference? It should be this: 01010101 +00010111 +00111011 *NOT* 000111011 -_- Let's see if I can do it. __________ 0111 - uh... what do you do when you have to add 4 zeros? O_o Cuz that would = 100, ne? But you can't carry 2 numbers... oh, poop. Link to comment Share on other sites More sharing options...
Wacky_Baccy Posted December 9, 2002 Share Posted December 9, 2002 LOL - why'd you change the "woo" size? It was funny! Posted by Lujayne Oh my goodness, kill me. Not cuz o' the answers, I'm happy I got those right. (*"woo"s* weakly) but I just realised I posted the wrong number to be added. -_- I put an extra 0 at the start of the 3rd number. Does that make a difference? It should be this: 01010101 +00010111 +00111011 *NOT* 000111011 -_- Let's see if I can do it. __________ 0111 - uh... what do you do when you have to add 4 zeros? O_o Cuz that would = 100, ne? But you can't carry 2 numbers... oh, poop. lol, don't worry - in this case it makes no difference at all I can't explain how/why you carry two numbers, cos I can't even begin to think how to wrod it x.x 01010101 +00010111 +00111011 --------- 10100111 The extra zero is irellevant HTH ^_^ Link to comment Share on other sites More sharing options...
Wraith 8 Posted December 9, 2002 Share Posted December 9, 2002 you.. know.. there once was a day (4 years ago) i was able to read binarry... now i cant anymore :( Link to comment Share on other sites More sharing options...
Lujayne Posted December 9, 2002 Author Share Posted December 9, 2002 Ooooo, thank goodness. Heh heh, you liked my giant woo? ^_^ Link to comment Share on other sites More sharing options...
Wacky_Baccy Posted December 10, 2002 Share Posted December 10, 2002 Posted by Lujayne Ooooo, thank goodness. Heh heh, you liked my giant woo? ^_^ I did Lots Good luck with the exam, ~L Let us know how you do, won't ya? (...You haven't had it already, have you??) Link to comment Share on other sites More sharing options...
Lynk Former Posted December 10, 2002 Share Posted December 10, 2002 BINARY? *runs out of the topic screaming* Link to comment Share on other sites More sharing options...
Wacky_Baccy Posted December 10, 2002 Share Posted December 10, 2002 There's nothing wrong with binary Wimp Hex is fun, too ^__^ Link to comment Share on other sites More sharing options...
Lujayne Posted December 11, 2002 Author Share Posted December 11, 2002 Just had it this morning! @_@ I spent so much time learning how to add binary, that I never bothered learning how to count... ¬_¬ So I'm guessing the questions that were like "What's 2002 in binary" and "what's the decimal form of this binary number" I got totally wrong... -_- But! Some right answers are better than no right answers! n_n Link to comment Share on other sites More sharing options...
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