lardbucket: calcsy – see your calculator on your computer


Calcsy – See your calculator on your computer

Filed under: Education, Math, Programming, School, Technology — Andy @ 9:17 pm

Calcsy LogoCalcsy is a tool you can download and use on your computer to show (and save) the screen of your TI-84+ or TI-89 Titanium calculator.

It’s useful for projecting the screen large enough for other people to see, or for taking a screenshot to use in instructions. For example, I’ve used it in teaching how to graph functions on a calculator, and I suspect it will be similarly useful to other people.

I first wrote Calcsy almost two years ago, and have been (very) slowly making it better since then. It’s now to a state where I think it’s reasonable to release. At the moment, it’s only available for Mac OS X, although it should be possible to port to Windows if there’s enough demand. Hopefully it’s pretty self-explanatory, but feel free to let me know if you have any questions.

All you need is a TI-84+ (or TI-84+ Silver Edition) or TI-89 Titanium and a USB cable to plug it in to your computer. The program is free, and you don’t need any special software on your calculator. (You also don’t need one of the special “Presentation Link” adapters – your computer and a normal USB cable works just fine.)

Other details of note: I suspect it won’t work with the very new TI-84+ Color calculators, but I’m happy to try to make it work if someone wants to send me one. Also, the logo was made by David Felice, so thanks are due to him.

Anyway, it’s free, go check it out. Let me know if you have any questions/comments/problems/etc.

Andy Schmitz


  1. Hello Andy:

    The university where I work has asked me to design some materials for an ESL course. I have seen useful material on your 2012books section, and I would like to use some of the texts you have posted there . Considering the fact that the University would somehow charge a fee for students wishing to take the course, would I still be able to some of that material?


    Comment by Juan Arcila — 6/20/2014 @ 11:37 am

  2. Hi Andy,

    This comment is not in response to this blog post, but I wanted to contact you and did not know how else to.

    I am a chemistry professor and I have come across a periodic table published here:

    It says you have something to do with this under Creative Commons. The reason I am bringing this up is because there are multiple typos and misinformation in this periodic table. It is one of the top search results on Google when periodic table is searched. As a result, every semester I have students who end up using it without realizing it is wrong, and they get wrong answers and miss points because of it. Is there any way you can take it down?

    Comment by Kay Dutz — 11/13/2014 @ 1:21 pm

  3. Sorry about taking roughly forever to respond to your comment on my blog: a deluge of spam had left my comments nigh-unusable. Luckily, I’ve gotten that mostly cleared out (thanks, Akismet!), and am now getting back to people.

    Juan Arcila: I am not a lawyer, and this is not legal advice, but my understanding of the noncommercial restriction on the Creative Commons license is that it is fine to charge for things around the books, but that you can’t charge for access to the books. You are definitely free to talk about them / assign readings from them/etc. in your class, and point to the copies on my website. I think the license means you can’t restrict access to copies you might make or distribute just to paying people. For example, if you have a class Moodle/Blackboard installation, you may not be allowed to put actual copies of the books up there. (I’m not sure of the details, but that would be worth investigating.) You can, however, put links to the books there. You can also host your own copies of the books if you want, as long as they’re available for free. That might mean that you put up copies of the books on your personal section of the school’s website, on your library’s website, or some similar resource.

    Kay Dutz: That is concerning indeed. I’ll contact you via email to get more information, but I’ll definitely want to correct the errors. Thank you for letting me know!

    Comment by Andy — 12/5/2014 @ 5:53 pm

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