On Fri, Jul 19, 2024 at 9:52 PM Steve Lewis via cctalk
wrote:
> And - any thoughts on "digital computer" vs analog? I'm aware of early
> Heathkit analog computers. Is it fair to say quantum computing is sort of
> a return back to analog computing?
Quanta Magazine just published this which may b
On Mon, Jul 22, 2024 at 06:53:19PM -0600, Eric Smith via cctalk wrote:
> On Sat, Jul 20, 2024 at 8:08?PM Steve Lewis via cctalk <
> cctalk@classiccmp.org> wrote:
>
> > What I meant was that in the title of the book they use "digital computer"
> > and I wonder if there was ever a book describing a
On Tue, Jul 23, 2024 at 1:53 AM Eric Smith via cctalk
wrote:
>
> On Sat, Jul 20, 2024 at 8:08 PM Steve Lewis via cctalk <
> cctalk@classiccmp.org> wrote:
>
> > What I meant was that in the title of the book they use "digital computer"
> > and I wonder if there was ever a book describing a mechanic
On 2024-07-23 9:02 a.m., Paul Koning via cctalk wrote:
On Jul 22, 2024, at 10:30 PM, dwight via cctalk wrote:
At the last vcf here in California a fellow, I forget the name, brought in two
tables that connected together, could generate a damped sine wave. It used
mostly Manco erector like
> On Jul 22, 2024, at 10:30 PM, dwight via cctalk wrote:
>
> At the last vcf here in California a fellow, I forget the name, brought in
> two tables that connected together, could generate a damped sine wave. It
> used mostly Manco erector like parts. It had some really great 0 backlash
> t
Discussion: On-Topic and Off-Topic Posts
Cc: Eric Smith
Subject: [cctalk] Re: the 1968 how to build a working digital computer
On Sat, Jul 20, 2024 at 8:08 PM Steve Lewis via cctalk <
cctalk@classiccmp.org> wrote:
> What I meant was that in the title of the book they use "digital computer&q
It was thus said that the Great Fred Cisin via cctalk once stated:
> Besides slide rules, etc.
>
> If you have an analog computer consisting of a 5 gallon bucket, and a 3
> gallon bucket, and plenty of water available,
> What are the steps for a PROGRAM to get a result of 4 gallons of water in
On 2024-07-22 7:06 p.m., Fred Cisin via cctalk wrote:
Besides slide rules, etc.
If you have an analog computer consisting of a 5 gallon bucket, and a 3
gallon bucket, and plenty of water available, What are the steps for a
PROGRAM to get a result of 4 gallons of water in the 5 gallon bucket?
Besides slide rules, etc.
If you have an analog computer consisting of a 5 gallon bucket, and a 3
gallon bucket, and plenty of water available,
What are the steps for a PROGRAM to get a result of 4 gallons of water in
the 5 gallon bucket?
On Sat, Jul 20, 2024 at 8:08 PM Steve Lewis via cctalk <
cctalk@classiccmp.org> wrote:
> What I meant was that in the title of the book they use "digital computer"
> and I wonder if there was ever a book describing a mechanical "analog
> computer" - and what they might even look like.
>
I haven't
One idea I've had for a number of years now is to use a PLC to simulate
a relay computer. Seems like it would be a fun project. While I have the
PLC, the time and motivation to do it is currently escaping me. The idea
came as I was looking at the Simon computer construction project from
one of
On 2024-07-21 6:43 p.m., Paul Berger via cctalk wrote:
I would say digital a common relay has two states open or closed, when
you energize the coil it draws in the armature which will open or close
the relay's contacts.
Konrad Zuse built his first digital computer using largely relay logic
i
Not retro but when the Goodwill Computer Museum (in Austin) had a
knowledgeable team running it they spun off into the Museum of Computer
Culture and had created a relay computer the RC3. (They did this while at
goodwill but right before the museum got shutdown as it wasn't making the
goodwill o
> Confusing myself as I thought about it, what category is a relay computer?
> It's electric and I would say mechanical but then not sure if mechanical can
> be electric.
> Is it still analog?
It's digital, in the sense that it operates on data that is encoded into
discrete values, as opposed to
On Sun, 21 Jul 2024, John Herron via cctalk wrote:
Not retro but when the Goodwill Computer Museum (in Austin) had a
knowledgeable team running it they spun off into the Museum of Computer
Culture and had created a relay computer the RC3. (They did this while at
goodwill but right before the muse
On Sat, Jul 20, 2024, 9:08 PM Steve Lewis via cctalk
wrote:
> A fair clarification, I realize that I was sort of mixing two different
> topics (and didn't mean to imply it had anything to do with analog
> computing).
>
> What I meant was that in the title of the book they use "digital computer"
>
On 2024-07-21 8:29 a.m., Sellam Abraham via cctalk wrote:
I'm pretty sure the book included "Working" in the title because who wants
to build a non-working computer?
Also, mechanical analog computer = slide rule :)
Sellam
A working computer, is one that makes money?
Ben.
On 21/07/2024 00:23, Steve Lewis via cctalk wrote:
A few years ago I got a FLIR camera, and on the back it says "export
controlled" It's the only consumer-device I ever got that has an explicit
Export Controlled sticker on it. I imagine if I were to bring it with me
on a trip to China, that pro
contributed to the lack of public
> documentation of the mechanical systems.
>
>
> On Sun, Jul 21, 2024 at 9:03 AM Dave Wade G4UGM via cctalk <
> cctalk@classiccmp.org> wrote:
>
> >
> > > -Original Message-
> > > From: Tony Duell via cctalk
> > > S
Sent: Sunday, July 21, 2024 5:42 AM
> > > To: General Discussion: On-Topic and Off-Topic Posts <
> > cctalk@classiccmp.org>
> > > Cc: Steve Lewis ; Tony Duell
> > >
> > > Subject: [cctalk] Re: the 1968 how to build a working digital computer
> > >
&g
osts <
> cctalk@classiccmp.org>
> > Cc: Steve Lewis ; Tony Duell
> >
> > Subject: [cctalk] Re: the 1968 how to build a working digital computer
> >
> > On Sun, Jul 21, 2024 at 3:08 AM Steve Lewis via cctalk <
> cctalk@classiccmp.org>
> >
> -Original Message-
> From: Tony Duell via cctalk
> Sent: Sunday, July 21, 2024 5:42 AM
> To: General Discussion: On-Topic and Off-Topic Posts
> Cc: Steve Lewis ; Tony Duell
>
> Subject: [cctalk] Re: the 1968 how to build a working digital computer
>
>
On 2024-07-20 10:41 p.m., Tony Duell via cctalk wrote:
On Sun, Jul 21, 2024 at 3:08 AM Steve Lewis via cctalk
wrote:
What I meant was that in the title of the book they use "digital computer"
and I wonder if there was ever a book describing a mechanical "analog
computer" - and what they might
On Sun, Jul 21, 2024 at 3:08 AM Steve Lewis via cctalk
wrote:
> What I meant was that in the title of the book they use "digital computer"
> and I wonder if there was ever a book describing a mechanical "analog
> computer" - and what they might even look like.
There have been mechanical analogue
Instead of paper clips and cardboard, consider a pachinko like marble
based computer. (claimed to be Turing complete, if you expand it enough)
https://upperstory.com/en/turingtumble
It's bulkier than a mobile phone.
or relays? :
https://www.amazon.com/Giant-brains-Machines-that-think/dp/B000
On Sat, 20 Jul 2024, Steve Lewis via cctalk wrote:
What I meant was that in the title of the book they use "digital computer"
and I wonder if there was ever a book describing a mechanical "analog
computer" - and what they might even look like.
half a century ago, my cousin showed me some plexig
A fair clarification, I realize that I was sort of mixing two different
topics (and didn't mean to imply it had anything to do with analog
computing).
What I meant was that in the title of the book they use "digital computer"
and I wonder if there was ever a book describing a mechanical "analog
co
On 7/20/24 4:52 AM, Steve Lewis via cctalk wrote:
Has no one explored a "tri-state" system? (discrete regions across 5V?)
Do you mean ternary computers?
https://en.wikipedia.org/wiki/Ternary_computer
Former SU played with it a bit...
regards,
chris
I should add, the paperclip computer was a mechanical computer, not an
analog computer in the 50-60's sense of the term.
b
On Sat, Jul 20, 2024 at 2:05 AM Bill Degnan wrote:
> Steve
> You ask a lot of good questions.
> The story is pretty well documented. There was a company that made a
> comme
Steve
You ask a lot of good questions.
The story is pretty well documented. There was a company that made a
commercial version of the computer described in the book
https://blog.adafruit.com/2013/05/08/how-to-build-a-working-digital-computer-out-of-paperclips/
There is a nice paperclip computer at
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