Alt-BEAM Archive
Message #00715
To: 'Terry Newton' wtnewton@nc5.infi.net; beam@corp.sgi.com
From: Wilf Rigter Wilf.Rigter@powertech.bc.ca
Date: Saturday, February 20, 1999 5:35 PM
Subject: RE: hmmm...i wonder which subject
>Hello Noam and associative memory fans,
>
>I tried you circuit and found that it oscillates most of the time because
>with the 3 gate configuration 1/2Vcc can appear at the input which puts the
>inverter in the linear region. I believe that larger networks of 74HC14
>gates may work. It requires 3 or 4 resistors at each input node to increase
>the probability of switching and make the circuit "interesting". That means
>4 or 5 (or more) gates.
>I'm going to try this with 10 gates (9 resistors) to create a
>"neighborhood" for the middle cell. If all goes well this could lead to
>arrays of such 9 resistor cells with each cell connected to it's 9
>surrounding neighbors which may be capable of generating "LIFE" or other
>CA. These can be asynchronous with propagation determined by a cap (and
>large series resistor) at each input. Or the cells can be synchronized by
>adding a "tristate" gate (instead of the large series resistor) to each
>input so that the cell will retain the last memory. Pulsing the tristate
>inputs will cause a next generation for the whole array (at least that's
the
>theory).
>
>Attached is a GIF of NOAM's circuit using a 4066 instead of the transistor
>he described. All whip up the GIFs for the proposed 10 cell array later.
> <>
>
>enjoy
>
> Wilf Rigter mailto:wilf.rigter@powertech.bc.ca
>
>
>> -----Original Message-----
>> From: Terry Newton [SMTP:wtnewton@nc5.infi.net]
>> Sent: Saturday, February 20, 1999 3:16 AM
>> To: beam@corp.sgi.com
>> Subject: Re: hmmm...i wonder which subject
>>
> snip
>
>> Maybe even with a hardwired associative memory? Noam Rudnick's
>> post was interesting, now I'm thinking about crossed inverters
>> and stable states...
>>
>> Terry Newton
>
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