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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Sun, 14 Mar 2004 21:45:23 GMT
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Viewed:
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1730 times
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> > 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 has 1 Reply:
 | | Re: LEGO Computers & Logic Gates
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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... (...) halt - a (...) signal (...) logic (...) shift (...) (20 years ago, 15-Mar-04, to lugnet.technic)
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Message is in Reply To:
| | Re: LEGO Computers & Logic Gates
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| (...) 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. Maybe you need motorized (...) (20 years ago, 14-Mar-04, to lugnet.robotics)
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