 | | Re: A better full adder!
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(...) Kevin (21 years ago, 26-Jun-03, to lugnet.technic, lugnet.robotics)
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| | what parts are left over after building 8448 gull wing?
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Trying to sort out all the parts that should be in a 8448 supercar set. I have built the gull wing version. What parts should I have left over, if any, that are needed to build any of the other versions? (21 years ago, 26-Jun-03, to lugnet.technic)
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| | Re: Mechanical Memory for Computing
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(...) Actually a byte is whatever you define it to be - a nibble is generally half a byte, and a word is generally 2 bytes. I haven't seen a machine using 4 bit bytes, but I've seen 8, 16, 32 and 64. And I'm sure there are other weird ones floating (...) (21 years ago, 26-Jun-03, to lugnet.technic, lugnet.robotics, lugnet.build, lugnet.off-topic.geek)
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| | Re: Mechanical Memory for Computing
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Very cool design. (...) Question: Why are you calling 4 bits a byte? 4 bits is a nibble, while 8 bits would be a byte. Obviously the design can be extended to 8 bits like you mentioned. They you would have your byte. Michael (21 years ago, 26-Jun-03, to lugnet.technic, lugnet.robotics, lugnet.build)
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| | Re: A better full adder!
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Hey, that's great! Now it's nice and symmetrical with 3 columns of 4 switches... something satisfying about that. :-) Now, all I need is 4 more switches and I can build it! Cheers, Mark (R) (...) (21 years ago, 26-Jun-03, to lugnet.technic, lugnet.robotics)
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| | A better full adder!
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I realized this afternoon that I could cull a switch from my earlier design. It's now down to 12 switches from 13. 4 switches ganged onto each piston. The wiring schematic is here: (URL) on how to interpret the diagram can be found in an earlier (...) (21 years ago, 26-Jun-03, to lugnet.technic, lugnet.robotics)
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| | Re: Mechanical Memory for Computing
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(...) About half-way down this page (URL) is a diagram and short discussion of a possible design for molecular level RAM. The diagram shows 2 memory cells of 2 bits each and the mechanism to select which memory cell is being read/written. In my LEGO (...) (21 years ago, 25-Jun-03, to lugnet.technic, lugnet.robotics, lugnet.build)
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| | Re: Mechanical Memory for Computing
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(...) <SNIP> (...) Do you happen to have any links to the molecular RAM design you are referencing? It would be very cool to compare and contrast your excellent model with the "real world" counterpart. Jona (21 years ago, 25-Jun-03, to lugnet.technic, lugnet.robotics, lugnet.build)
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| | Re: Mechanical Memory for Computing
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(...) I concur. It's only a matter of time now before someone figures out how to build Babbage's Difference Engine from Lego. Becky (21 years ago, 25-Jun-03, to lugnet.technic)
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| | Re: Mechanical Memory for Computing
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Brilliant! Positively brilliant! >> Mark (21 years ago, 25-Jun-03, to lugnet.technic, lugnet.robotics, lugnet.build)
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