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Raster
Active Member
Joined: 17 May 2004
Posts: 529
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 Posted: 28 Aug 2006 12:08:15 am Post subject: |
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This is quite interesting. What makes computer systems generate random numbers? Of course an algorithum of some sort, based oppon many different variables of the real world, but what are they? If some how we could predict these randomized numbers think of what we could do with them. Win over casinos, decrypt certaint encryptions made by computers, and possible cheat the stocks? 
Just something to think about. |
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sgm
Calc Guru
Joined: 04 Sep 2003
Posts: 1265
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Weregoose
Authentic INTJ
Super Elite (Last Title)
Joined: 25 Nov 2004
Posts: 3976
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| Posted: 28 Aug 2006 01:35:07 am Post subject: |
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| A friendly PDF including mathematics and a reference to the TI-83 Plus: Click |
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thornahawk
μολών λαβέ
Active Member
Joined: 27 Mar 2005
Posts: 569
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| Posted: 28 Aug 2006 12:32:01 pm Post subject: |
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Quote: ...JFGI...
Let's not be too harsh... others have been given kinder treatment for more insipid questions AFAIR.
Anyway... Raster, I suggest you look up the "linear congruential generator" as a start. Then you might want to search for stuff like "lagged Fibonacci generators", "Mersenne twister", or "Marsaglia-Zaman algorithm" for some of the more "industrial strength" methods. Knuth's book(s), "The Art Of Computer Programming", is also a good read for these sort of things.
thornahawk |
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alexrudd
pm me if you read this
Bandwidth Hog
Joined: 06 Oct 2004
Posts: 2335
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| Posted: 28 Aug 2006 04:31:56 pm Post subject: |
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| Is it possible to replicate the 83+'s method on the computer and produce the exact same results with a given seed? |
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DarkerLine
ceci n'est pas une |
Super Elite (Last Title)
Joined: 04 Nov 2003
Posts: 8328
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| Posted: 28 Aug 2006 04:39:43 pm Post subject: |
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| VTI does it, obviously. If you knew the algorithm, you could write a program for it, but TI's manuals don't go into much detail describing it. I think I saw something in one of the manuals, but I can't find it at the moment. |
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sgm
Calc Guru
Joined: 04 Sep 2003
Posts: 1265
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DigiTan
Unregistered HyperCam 2
Super Elite (Last Title)
Joined: 10 Nov 2003
Posts: 4468
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| Posted: 28 Aug 2006 08:19:15 pm Post subject: |
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Well, that report did admit there was a period at some point. Could anyone reasonably anticipate the RN sequence given what the community knows about the generator at this point? Like take a few dozen random numbers as inputs and start anticipating the whole chain from there? I've heard of that being used to defeat rolling-code RF remotes but with partial success.
Last edited by Guest on 28 Aug 2006 08:20:35 pm; edited 1 time in total |
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Raster
Active Member
Joined: 17 May 2004
Posts: 529
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| Posted: 31 Aug 2006 06:31:58 pm Post subject: |
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Well... I did google it, didnt get much... except "BUY THIS BOOK OFF AMAZON.COM!!!"
And thanks for the answers |
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