[sdiy] Analog Computer vs. Modular

[Czech Martin]

Because of the biz trip I'll loose another two weaks,
oh well...

(such a trip is usually NO FUN. Even business class seats
will make your back ache after some hours. I can not sleep
in planes, and usually you can not look down to the ground.
Analog Computers usually contain integrators,
coefficient modules, sometimes nonlinear functions,
sometimes multipliers, etc.

Modular Synths can have that, too. But 
built into special functional blocks.

Has anybody ever seen a module set that comes
close to the old analog computers, i.e.
enables to program some differential equation
and the like?
It is perhaps challenging to provide integrators
as stand allone units because of the high
impedance input that would require (at least for dc).
It is perhaps more challenging to have the time
constants voltage controlled (well, OTA).

I could imagine a little "sytem in the system",
where a local set of such analog computing gear
is stuffed into a module, the patch field
for tiny, short wires usually covered with a metal shield
(a plastic transparent but conducting shield would be cooler
but nothing for DIY I fear...).


m.c.