Subject:
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Re: LEGO Computers & Logic Gates
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Newsgroups:
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lugnet.technic
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Date:
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Mon, 15 Mar 2004 01:52:50 GMT
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Viewed:
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1711 times
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I'm not much on Boolean calculations -- if it stops part way through, does
that make it a MAYBE gate?
Jim
"Martin Howard" <goldfishwbp@yahoo.com> wrote in message
news:HuL5rn.4vq@lugnet.com...
> > > I've tried to do it mechanically. So far I've made NOT, AND, NAND, OR,
> > > NOR, a basic NAND latch (flip-flop) and a clocked NAND latch.
> >
> > The problem seems to me that the power to run the machine comes only
> > from the logic inputs. Thus, you'll have to push insanely hard on
> > a one bit input in order for it to operate any reasonable amount of
> > logic.
>
>
> That definately is a problem, after a couple of gates it grinds to a • halt - a
> mixture of the slippage between gears and the problem you have identified.
>
> I had envisaged that I could use a piston arrangement to drive the clock • signal
> backwards and forwards, in the hope that this would give power to each • logic
> operation. But as you say the actual bits are completely passive.
>
>
> >
> > Maybe you need motorized 'amplifiers' at frequent intervals in the
> > circuits.
>
>
> Definately worth looking into, especially if I am to build a full adder or • shift
> register.
>
> Martin
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Message is in Reply To:
 | | Re: LEGO Computers & Logic Gates
|
| (...) That definately is a problem, after a couple of gates it grinds to a halt - a mixture of the slippage between gears and the problem you have identified. I had envisaged that I could use a piston arrangement to drive the clock signal backwards (...) (20 years ago, 14-Mar-04, to lugnet.technic)
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