Re: Analogue computing

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#621237

From: ma...
Date: Thu, 15 Mar 2018 21:06

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On 2018-03-15, Jon Elson <jme...@wustl.edu> wrote:
> Ahem A Rivet's Shot wrote:
>
>> On Thu, 15 Mar 2018 07:09:07 -0400
>
> However, once the IC op-amp came out, analog computing for production 
> control systems got a huge boost.  Today (and, really, from the late 1980's 
> or so) digital computers with a couple ADC and DAC chips can do a very 
> cheap, reliable, and reproducible job with a minimum of pots and 
> adjustments.  But, back in the 70's and into the 80's you could do a lot 
> with a couple op amps.  I retrofitted a cruise control on a car I had, it 
> was an all analog solution, and worked very well.  About a 2 x 3" PC board 
> with 5 8-pin DIPs and some passives did the whole thing.
>
> Jon

I have a memory of reading that in the early days, calculations wee
done twice or thrice to check on the results.


-- 
greymaus.ireland.ie
Just_Another_Grumpy_Old_Man

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Subject: Re: Analogue computing
Date: 15 Mar 2018 21:06:48 GMT
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