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02-10-2004, 10:31 PM
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#1 |
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Confirmed User
Join Date: Jun 2003
Location: Toronto
Posts: 2,999
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Anyone knows how to do this stupid problems with 2' compliment binary representation?
 please help with any u can! thanks questions: 1.[14] a) Find the 16-bit 2?s complement binary representation of the decimal number 1243. b) Find the sign-and-magnitude binary representation of the decimal number -1243. c) Find the 16-bit 2?s complement binary representation of the decimal number -1243. 2.[12] 100111100011001 represents a 16-bit 2?s complement binary number. What decimal number does it represent? (careful: count bits first) 3. [12]10011101 represents a 8-bit 2?s complement binary number. What decimal number does it represent? 4.[12] Add the following two 12-bit 2?s complement binary numbers. Give the answer in decimal. 011001101111 111010111011 |
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02-10-2004, 10:33 PM
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#2 |
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Confirmed User
Join Date: Jun 2002
Location: Connecticut.
Posts: 1,358
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1. 9124914
2. North Dakota 3. -2104^10 + McDonalds 4. 1010110G.W.Bush01011000 Hope that helps...
__________________
 Make Major Bank With Major Personality - NaughtyBank! Featuring NaughtyAllie and NaughtyJulie! |
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02-10-2004, 10:33 PM
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#3 |
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Confirmed User
Join Date: Dec 2003
Location: Toronto
Posts: 285
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homework?
 you better off learning how to do it than asking for an answer. it's not really that hard.
__________________
Custom large/complex systems programing.<br>ASP.Net, C#, XML, MS SQL, WebServices(SOAP).<br>ICQ: 235719545 |
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02-10-2004, 10:34 PM
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#4 |
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Confirmed User
Join Date: Jun 2003
Location: Toronto
Posts: 2,999
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i am confused
just need answers to compare |
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02-10-2004, 10:34 PM
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#5 | |
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Confirmed User
Join Date: Jul 2003
Location: Grand Central
Posts: 2,948
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Quote:
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02-10-2004, 10:38 PM
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#6 |
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Confirmed User
Industry Role:
Join Date: May 2001
Posts: 570
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I learned that shit in cs354 here at uw-madison. its a bitch, but easy. read the book, and take notes in your lecture next time.
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02-10-2004, 10:38 PM
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#7 | |
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ICQ: 197-556-237
Join Date: Jun 2003
Location: BRASIL !!!
Posts: 57,559
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Quote:
__________________
I'm just a newbie. |
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02-10-2004, 11:10 PM
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#8 |
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Confirmed User
Join Date: Jun 2003
Location: Toronto
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02-11-2004, 09:15 AM
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#9 |
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Confirmed User
Join Date: Jun 2003
Location: Toronto
Posts: 2,999
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anyone else can help out?
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02-11-2004, 09:33 AM
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#10 |
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Confirmed User
Join Date: Jun 2003
Location: Toronto
Posts: 2,999
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50 buks paypal who does it lol
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02-11-2004, 10:11 AM
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#11 |
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Confirmed User
Join Date: Jun 2003
Location: Toronto
Posts: 2,999
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02-11-2004, 10:34 AM
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#12 |
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So Fucking Banned
Join Date: Apr 2002
Location: Canada T.O.
Posts: 932
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a) Find the 16-bit 2haha146;s complement binary representation of the decimal number 432.
0000000110110000 b) Find the sign-and-magnitude binary representation of the decimal number -432. 1110110000 c) Find the 16-bit 2haha146;s complement binary representation of the decimal number -432. 0000000110110000 0000000110110000 flip 1111111001001111 +1 1111111001010000 |
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02-11-2004, 10:35 AM
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#13 |
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So Fucking Banned
Join Date: Apr 2002
Location: Canada T.O.
Posts: 932
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2.[10] 100110100001101 represents a 16-bit 2?s complement binary number. What decimal number does it represent? (careful: count bits first)
100110100001101 it is 15 bits, we need to add one 0 and it will be positive 0100110100001101 the answers is 19725 3. [10] 10001010 represents a 8-bit 2?s complement binary number. What decimal number does it represent? 10001010 is negative, first flip and after that add 1 011110101 +1 011110110 it is positive the answers is 246 4.[10] Add the following two 12-bit 2?s complement binary numbers. Give the answer in decimal. 011001100110 101011111011 the answer is 353 |
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02-11-2004, 10:39 AM
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#14 |
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Confirmed User
Join Date: Oct 2001
Location: Somewhere in time
Posts: 143
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humm humm it's been a while.. As far as I can remember, a 2's complement binary number is found by reversing all the bits of the number, and then adding 1.
I.e.: You have 01000001 (33 in decimal) You reverse all the bits = 10111110 Then add 1 = 10111111 (191 in decimal) Don't take my word for it though. Just a little hint hopefully. I'm too lazy to find my books and search for the answer ;) |
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02-11-2004, 10:41 AM
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#15 |
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Confirmed User
Join Date: Oct 2001
Location: Somewhere in time
Posts: 143
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Ohh well Cyborg was faster than me.. Good job ;)
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02-11-2004, 10:47 AM
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#16 |
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Confirmed User
Join Date: Jun 2003
Location: Toronto
Posts: 2,999
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it is all clear to me now!
once again gfy saves the day!  |
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