Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.forth > #23709

Analog computer simulation in FORTH

Show all headers | View raw

Fifty years ago analog computers were faster (i.e. shorter 
turnaround time) than digital computers. Later digital computers 
won out based on increased precision.

I've always had a bias towards analog computers. They were called 
*ANALOG* computers for a reason. [For the youngsters, resistance, 
capacitance, inductance, voltage and current were analogs of the 
physical parameters of the system being simulated.]

For the models I'm currently interested in SPICE or ECAP of the 
70's would be overly complex overkill. The versions I've had 
contact with put much effort into transient analysis and 
piecewise linear approximations of active devices.

My world is much simpler.
All passive components are linear and described by a positive scalar.
My only active component is an ideal op-amp.
When simulation begins, all inputs have been 0 since -infinity.

When doing a Google search I found
http://code.google.com/p/propforth/downloads/detail?name=PropFacs.f.rtf

It not suitable for me as it is targeted to a specific chip (I'll 
be using a desktop machine.) and it appears not to be a standard 
FORTH.

It does show some work in FORTH exists.

Pointers to further references?

TIA

Back to comp.lang.forth | Previous | Next — Next in thread | Find similar

Thread

Analog computer simulation in FORTH Richard Owlett <rowlett@pcnetinc.com> - 2013-06-17 12:23 -0500
  Re: Analog computer simulation in FORTH mhx@iae.nl (Marcel Hendrix) - 2013-06-17 21:18 +0200
    Re: Analog computer simulation in FORTH Richard Owlett <rowlett@pcnetinc.com> - 2013-06-18 07:20 -0500
      Re: Analog computer simulation in FORTH m.a.m.hendrix@tue.nl - 2013-06-18 08:21 -0700
        Re: Analog computer simulation in FORTH Richard Owlett <rowlett@pcnetinc.com> - 2013-06-19 07:45 -0500

csiph-web