Attn: Geeks
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From: This is not my house!
Got it I think. I think I know the proof... just need to think it through to write it out. It's actually similar to the way I do math (I don't remember my mult tables... I have this pathetic arithmetic learning disability so I made up rules as a kid... this relates to some of them.)
Joined: Jul 2001
Posts: 28,318
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From: This is not my house!
I don't need to do the proof unless someone needs the words. Josh did a great job illustrating exactly what happens. You just need to see that the multiplier is 1101 and follow Josh's math.
You use the bottom (1) second from bottom (1) skip the next (0) and use the top (1.... that's 1101) Then read Josh's explanation as to how binary mult works.
Way to go Josh.
(This really is close to the way I multiply since about 5th grade.)
You use the bottom (1) second from bottom (1) skip the next (0) and use the top (1.... that's 1101) Then read Josh's explanation as to how binary mult works.
Way to go Josh.
(This really is close to the way I multiply since about 5th grade.)
Registered User
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Originally Posted by The Unabageler,Jun 14 2005, 09:38 AM
for non binary geeks - when you do long multiplication, in essence you divide the bottom number by 10 each time, and the result of the single multiplication is multiplied by 10 (you add a zero at the end) before you sum it all up. Same in binary, except is divide/multiply by 2 each time.
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From: SoCal
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