Re: The joy of FORTRAN

On 26 Mar 2025 22:57:57 GMT, rbowman <bowman@montana.com> wrote:

On Wed, 26 Mar 2025 19:04:03 +0000, The Natural Philosopher wrote:
>

That's pneumatics, not hydraulics.

>
If we're still talking about fluidics and not some other subject:
>
https://en.wikipedia.org/wiki/Fluidics
>
"The physical basis of fluidics is pneumatics and hydraulics, based on the
theoretical foundation of fluid dynamics."
>
https://www.britannica.com/technology/fluidics
>
"fluidics, the technology of using the flow characteristics of liquid or
gas to operate a control system."
>
The paper I cited used a gas, namely the stuff we breathe.

I recall seeing fluidic components describes as fabricated from thin sheets. so:
solid sheet, sheet with intricate structure (flipflop, gate, whatever), solid
sheet. Holes would form vias to other layers. So you'd end up with a block of
standard components, "wired" by the interconnections. This may have been by
Siemens, for slow but ex-proof logic.

I am pretty sure this was running on compressed air, with ambient pressure and
high pressure as the two states.


Thomas Prufer