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Software for simulation digital circuits?

Discussion in 'Electronic Design' started by c.j[dot]w, Feb 12, 2004.

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  1. c.j[dot]w

    c.j[dot]w Guest


    Anyone know any good software for simulating digital circuits? What is
    the industry standard for this?

    I have tried CircuitMaker 2000 but I find it too simple, I would like
    something more advanced with more possiblities. CircuitMaker also seems
    to have some annoying bugs.

    A quick search suggested softwares such as VisualSpice 6, Automation
    Studio and MacroSim. Which of them are worth trying out? Any other

    Thanks in advance!
  2. Chaos Master

    Chaos Master Guest

    c.j[dot]w called The Usenet Police (tm) of and said to the
    cops, at Thu, 12 Feb 2004 23:08:10 +0100:
    Run away from VisualSpice. It's junk.

    A rather good program for digital simulation is Micro-Cap 7 (sadly it's

    PSpice can also simulate digital circuits (and is expensive too). For a cheaper
    alternative you can try SIMetrix.

    Those programs use the "mixed-mode" simulation so you can have mixed
    analog/digital devices, ADC/DACs and others.
  3. Genome

    Genome Guest

    I would recommend that you get in touch with Trent Polytechnic, Nottingham
    Engerland, and request a copy of Barry Tegues lecture notes.

  4. Rich Webb

    Rich Webb Guest

    BeigeBag Spice has a pure digital mode (in addition to mixed-mode spice
    behavior) with a free-but-limited-parts version at

    It's genuinely free, so you might as well check it out. The full version
    is reasonably priced and they're pretty good about updates/bug fixes.
  5. c.j[dot]w

    c.j[dot]w Guest

    Thanks for the answers. I use PSpice for analog simulation and I have
    noticed that it has digital components, but it has no "digital mode" (at
    least I haven't found one), so I'll still have to bother with current
    and grounding which I don't like; I want to work with pure digital ideal

    I'll defenitely check out MicroCap and SIMetrix.

    Regards Carl
  6. Jim Thompson

    Jim Thompson Guest

    On Fri, 13 Feb 2004 07:56:04 +0100, "c.j[dot]w"

    If you use only digital components you will note that the output in
    Probe is 1's and 0's.

    Only if you have an interface between digital and analog will you get
    a "voltage" trace.

    ...Jim Thompson
  7. c.j[dot]w

    c.j[dot]w Guest

    Thanks for the advice. I'll check it up.
  8. Chaos Master

    Chaos Master Guest

    c.j[dot]w called The Usenet Police (tm) of and said to the
    cops, at Fri, 13 Feb 2004 07:56:04 +0100:
    It has a "digital" mode. Only if you use an analog part (as in a gate connected
    to the base of a transistor) you need grounding. This is a limitation of all
    simulators, as analog circuits must have a ground.
    IMHO SIMetrix is one of the easiest to use simulators for starters. MicroCap is
    somewhat difficult to use (some menus are too deep). You should download SIMetrix
    Intro ( , the demo comes with a few gates modelled) and try for

    PS: I don't speak for Catena Software or Spectrum Systems (uCap) when I post this.
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