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- I have a HP 16C, mainly for doing number conversions (DEC-HEX-BIN) and binary arithmetic.

- I have a HP 15C to take with me all the time (due to its small form factor).

- I have a HP 48 GX as main calculator, it is most feature complete and has a clock and alarms. I use it a lot for time calculations.

- I have a HP 48 SX, but did not use it much any more after acquiring the 48 GX.

- I have a HP 10bII+, which was a gift of my brother in law when he saw my obsession with HP calculators. I do not use it much, as I am not in financial stuff.

- I have a HP 41 CV, which is less capable as my 48 GX, but I somehow love it so much, that it resides on my desktop and is used a lot.

- I have a Casio Classpad fx-CP400, which I use when I tutor my nephew - it is the best fit for high school requirements (in Germany).

- I have a bunch of TI nspire and voyagers and a TI 83 plus, that I never use.

- I have a TI-92 plus which I used a lot in the past, but I do not like it anymore.

- I have a Casio FX-730P, which I like to write little programs for.

Not to mentions my collection of slide rules.

discuss

aaplok|1 month ago

Neat collection!

Do you have advice on how to use those calculators with modern tooling? For example I remember there were cross-compilers for the hp48 [0], do you use any of that (and how do you transfer data to/from the calculators)?

[0] https://web.archive.org/web/20250124204959/https://sourcefor...

AlphaGeekZulu|29 days ago

No, I do not get that deep. I used to exchange data on the Ti-92 plus and the Classpad. Connecting those devices is either rather outdated (serial port with USB converter) and/or comes with vendor subscriptions, which I am not willing to pay.

Maybe, if I had more time ;-)

zippyman55|25 days ago

I carry a side rule. About two years ago, someone at work remarked that I probably don't have a slide rule. A quick trip to the car and back and he was very impressed.

My Bomar MX100 calculator and my HP 12C. Love them!

wolvoleo|27 days ago

The 16C is amazing, I wish I had one as I'm doing a lot of embedded stuff. But I've always found RPN very annoying. Though I guess with binary/hex stuff I would use it mostly for conversion anyway.

But they don't make them anymore it seems.