I tried putting my thumbnail between them, but it didn't help. I can't measure the voltage because my multimeter is also acting stupid.

Maybe that needs a new battery, too. 

I got this almost new Casio calculator from my English teacher for free today. It was displaying garbage on the screen, and it would not clear. I pushed the reboot code indicated on the case, and that solved the problem.

Haha nice!  Don't you just love it when you get something that is "broken" and the fix is just so easy?

Nice! That's one of the most advanced non-graphing non-programming calculators Casio currently makes. Same as my FX-991MS, except it has the fancy natural display.

When I saw that it was a Casio, you were the first person I thought of since you have one just like it. Too bad I suck at math, otherwise I might be able to make use of it. 

To be honest I did never find any use for these more complex calculators.
The extra features mean the basic calculations become more complicated, while still way insufficient for really complex math.

I more like to use the simplest "scientific" ones (just plain calculations, single 7-segment display, 10+2 digits way sufficient; e.g. KC108) for the basic calculations (where I need the calculations to be really quick) and then do all the more advanced stuff (arrays, statistics, circuit analyses,...) on a true computer (so with very easy way to double check the entered data, equations and interpreting results, so more likely to catch errors).

To be honest I did never find any use for these more complex calculators.
The extra features mean the basic calculations become more complicated, while still way insufficient for really complex math.

I have a calculator similar to the one above, and I've used every single function on it. It works fine for me, either with simple math or the more complex stuff.

Edit: I was thinking of my previous calculator, which had fewer functions. I've used maybe 2/3 of the functions on my current one.

Video of the Canon Multi 8 is now up:

https://www.youtube.com/watch?v=m7NqILXuWyI

Dave, did you ever get your 12C working again? I don't think we ever did figure out why it suddenly quit.

I got two really cool calculators for Christmas. Only one of them is vintage and the other is brand new, but I think both are worth mentioning.

The new one is a Texas Instruments TI-84 Plus CE. It's the newest member of the mid-range TI-84 series, a redesigned and improved TI-84 Plus C Silver Edition. It's been on the market almost a year. I've always wanted one, but never planned on getting one due to budget constraints, but ended up buying one online for $160 just before Christmas because I got screwed over on an exam when a question required us to calculate the hyperbolic tangent of a complex number, which only TI graphing calculators (and maybe high-end calculators from other companies) can do.

My review: Looks awesome, feels high quality. Color display looks great. Battery life is apparently ridiculously long. Only complaint is the glossy black finish picks up fingerprints like crazy. Maybe the other colors are better?

The vintage calculator is a Casio FX-6300G, an entry-level graphing calculator sold from 1991 to 1997. This calculator is really cool in that the display is smaller than your usual graphing calculator, and only the left half is dot-matrix and used for graphing. The right half is all indicators, except for a single dot-matrix line used for calculations. As a result it's really tiny - smaller than some regular scientific calculators. It's also programmable in Casio BASIC and has just about all the functions found in a high-end scientific. Really cool calculator.

I have a vintage Nixie Tube calculator.  Photos are in the gallery.  it is cool because it takes about a second or so for the thing to "compute" the answer and the Nixies "scroll" as it does so.  Unfortunately, some of the keys do not always work properly, but all the Nixies do. 

Can you post link to it?

Just seen someone looking at this old topic, the calculator I would most like to get is one I had back in the 1980's, a Hewlett Packard HP21. It had a red LED display and used Reverse Polish Notation, which made complex calculations very easy, as you could literally work through an equation from left to right. I still have the instruction book for it somewhere, but looking on eBay the only ones I've seen are well in excess of £100, which is way too expensive for me  

Being number blind I find a calculator an essentual item (yes cannot spell either LOL) useful working out the amperage of lamps that I put up on the gallery, my one is a Busicom sc-121b/s electronic desk-top caculator solar powered...very good... got it from a boot sale.

Being number blind I find a calculator an essentual item (yes cannot spell either LOL) useful working out the amperage of lamps that I put up on the gallery, my one is a Busicom sc-121b/s electronic desk-top caculator solar powered...very good... got it from a boot sale.

Is there anything you have that you didn't get from a boot sale..?