So I bought a Casio 115ES and an HP Smartcalc 300s


I purchased those two calculators for the purpose of picking one for my son to use in his upcoming school year.

Well, I got them both and have now gotten around to opening them up, and to my surprise they're the exact same machine under the hood.

Same screen, same buttons with the same functions.

The Casio has a built-in equation solving function, the HP has arguable better aesthetics and buttons.

I guess I shouldn't have been surprised... At least they were cheap!


Quote: my surprise they're the exact same machine under the hood.

Casio fx-115 ES offers numerical integration. Does Smartcalc 300s also?


It appears it does not.


So it is more like the fx-85 ES, perhaps.


That may be the case, I haven't had time to really dig into either of them.

I was simply struck by the fact that they initially appeared almost functionally identical.


The fx-115 ES has an outstanding numerical integrator, as discussed in this older thread:

I guess the Smartcalc 300s would cost a bit more if it were a rebranded 115-es.


The Casio also can solve a 2x2 or 3x3 system of equations, do some matrix math, solve a quadratic or a cubic equation, cross or dot product with vectors, work with complex numbers, and probably a few other things I have forgot. It's a nice calculator for the money.

Possibly Related Threads…
Thread Author Replies Views Last Post
  Silly me... I also bought a 12C and 15C Eelco Rouw 3 2,278 12-10-2013, 04:42 PM
Last Post: Stephan Matthys
  Bought a 16C to compensate a little Eelco Rouw 23 8,003 12-07-2013, 01:26 PM
Last Post: Eelco Rouw
  ENG button (like Casio calculators) on HP Prime uklo 3 2,017 11-04-2013, 09:45 PM
Last Post: LHH
  HP 300s+: Too expensive ! Dimitri 5 1,967 09-06-2013, 02:19 PM
Last Post: Mic
  [HP Prime] Request: re-execute history like CASIO classPAD serie 300/400 CompSystems 1 1,338 09-03-2013, 02:47 PM
Last Post: CompSystems
  OT: Does anyone have the new Casio Classpad fx-CP400? Eddie W. Shore 4 1,814 08-20-2013, 08:42 AM
Last Post: Eddie W. Shore
  Casio fx-CP400 emulator (90 days trial) Mic 2 1,791 05-16-2013, 01:07 PM
Last Post: critor
  OT: RPN port to Casio fx-cg10/20? Matt Kernal 4 1,968 04-30-2013, 12:16 PM
Last Post: hugh steers
  Crate of HP 300s+ Mic 0 829 04-22-2013, 12:56 PM
Last Post: Mic
  HP 300S+ Erturk Kocalar 2 1,330 03-19-2013, 07:16 AM
Last Post: Cristian Arezzini

Forum Jump: