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Timing Diagram Tool?

Discussion in 'CAD' started by Jim Thompson, May 7, 2007.

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  1. Jim Thompson

    Jim Thompson Guest

    Anyone know of a cheap (or free) Timing Diagram tool?

    I need to communicate with my digital counterparts on an IC design ;-)

    ...Jim Thompson
  2. Jim Thompson

    Jim Thompson Guest

  3. Jim Thompson

    Jim Thompson Guest

    Now. A dumb question... do I just copy this to the \Windows\Fonts
    directory, or is some other step required?

    ...Jim Thompson
  4. "Jim Thompson"...
    I think I just copied it into the folder that is shown when you follow
    Start --> Settings --> Control Panel --> Fonts
    but maybe it must also be registered.

    See also:

    Adding New Fonts
    Windows supports TrueType fonts or fonts that are specially designed for
    Windows, and these fonts are available commercially. Some programs also
    include special fonts that are installed as part of the program
    installation. Additionally, printers frequently come with TrueType or
    special Windows fonts. Follow the directions that come with these products
    to install these fonts.

    To manually install or re-install a font:
    1. Click Start, and then click Run.
    2. Type %windir%\fonts, and then click OK.
    3. On the File menu, click Install New Font.
    4. In the Drives box, click the drive that has the floppy or CD-ROM
    that contains the fonts you want to add. If you are installing fonts from a
    floppy disk, this is typically drive A or drive B. If you are installing the
    fonts from a compact disc, your CD-ROM drive is typically drive D.
    Double-click the folder that contains the fonts.
    5. Click the font you want to add. To select more than one font at a
    time, press and hold down the CTRL key while you click each font.
    6. Click to select the Copy Fonts To Fonts Folder check box. The
    Windows\Fonts folder is where the fonts that are included with Windows are
    7. Click OK.

    Note On Microsoft Windows NT 4.0, Microsoft Windows 2000, Microsoft Windows
    XP, and Microsoft Windows Server 2003, you must be an administrator to add
    and remove fonts.

    Arie de Muijnck
  5. Joerg

    Joerg Guest

    Arie's hint is great. But it'll be lots of typing. If it isn't for doc
    purposes but just for mutual understanding there is an easier way. This
    Saturday me and my layouter (with him being in Vermont) just could not
    get onto the same page with a weird kind of laser diode mounting
    (z-bend, then rotate a bit and lay flat over some discretes).

    So I sketched it up, scanned that in and zipped it over. Tada! Problem
    solved, layout is now done. But the fab people haven't come back with a
    quote for hours now. Hope that doesn't spell trouble.
  6. My Computer -> Control Panel-> Fonts and drag & drop the ttf file in,
    it should install.

    Best regards,
    Spehro Pefhany
  7. John Larkin

    John Larkin Guest

    I sketch on grid paper, photograph, and email. One of my customers
    jokingly asked me what CAD package I use, and I answered "Sharpie."

  8. Joerg

    Joerg Guest

    Didn't Bob Widlar call that his "Mexican Computer"?

    I really like the scanner. Got myself one of those biz-hub style things
    and it sits within arms length from me. It's connected to the LAN.
    Sketch up, click the scan to email thingamagic on the PC, bzzzzt, click,
    click, click, done.
  9. Joerg

    Joerg Guest

    Agree. Except that I don't know what an eraser shield is. Do I have to
    feel dprived now?
  10. Joerg

    Joerg Guest

    Yep, it does that, too. Just have to hit another button and it copies.
    Faxes, scans, prints and copies at a pretty good clip. This has freed up
    a lot of space in my office plus I have better redundancy now. It has so
    many buttons that I just discovered a new one after over a year: It can
    scale copies. Yeehaw. Didn't know that.
  11. An eraser shield is a small piece of stainless steel, about the size of a
    credit card and very (0.010" or so) thin. It has various size cutouts in
    the steel, some circles, some radiuses, some straight lines, some !
    teardrops, etc.. You put the shield over the part you want to erase a tiny
    portion of and erase like hell without worry about erasing too much.

    I've still got a working electric eraser (both plug-in and cordless) if
    anybody needs one. Otherwise they go to the engineering museum when I kick

  12. Joerg

    Joerg Guest

  13. Phil Hobbs

    Phil Hobbs Guest

    Nah, that was Teledeltos paper. It was electrically conductive, with a
    sheet resistance of something like 10k ohms per square. You cut it with
    an X-Acto knife, put a voltage across it, and it solved the 2D Laplace
    equation for voltage drop vs position pretty well. I went looking for
    some a few years ago--it had been picked up by a British outfit,
    allegedly, but they didn't seem to have any for sale any more.


    Phil Hobbs
  14. Joerg

    Joerg Guest

    Thanks for explaining. Didn't know that. But I could imagine that the
    sharp edges will increase the amount of eraser turds that go all over
    the place, where my wife says "look at the mess you made now".

    I've never gone that high-tech :)
  15. Nothing works like quadrille paper, pencil, eraser, ruler and eraser
    shield until you get the concept settled. Then, and only then, is CAD
    productive, IMHO.

    Best regards,
    Spehro Pefhany
  16. It's handy effectively having a photocopier within reach too (scan
    directly to laser printer). I use it rarely, but it sure comes in
    handy when it's needed.

    Best regards,
    Spehro Pefhany
  17. John Fields

    John Fields Guest

    LOL, on the contrary, if you don't know what an eraser shield is you
    must be a genius working with India ink from the start. ;)

    Long before CAD came on the scene, these were my two best friends:

    The logic template was the bugger and the eraser shield was the
    debugger. ;)
  18. Joerg

    Joerg Guest

    At the university we were forced to use ink pens. The tricky ones from
    Rotring or Staedtler that would only work if held at exactly 90 degrees
    to the vellum, would leak a lot and dry up in no time. Plus ruin the
    occasional shirt. Same during the internships that were mandatory. So
    yeah, I kind of got used to that.

    For some reason those links don't work for me. When I click on these
    nothing happens :-(
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