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New HP 28S, strange behaviour
03-21-2016, 08:47 PM
Post: #2
RE: New HP 28S, strange behaviour
Your HP28s looks normal,

the numbers you mention is the stack numbers.

Maybe you are used to algebraic calculator and does not know RPN.

HP 28s is a calculator with RPN entry logic.

Please refer to this page of this site to learn RPN:

http://www.hpmuseum.org/rpn.htm#learn

Theres also a good youtube video that explain RPN very well:

https://www.youtube.com/watch?v=cPKg_JtI-Ys

Don't forget to read the calculator manual, where it explains how your calculator works.

If you don't have it, you can order a scanned pdf one here in this site.

After you did all of these, if you have others doubts, please ask here.

Hope I have helped

Cheers
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Messages In This Thread
New HP 28S, strange behaviour - Lithium - 03-21-2016, 07:44 PM
RE: New HP 28S, strange behaviour - Jlouis - 03-21-2016 08:47 PM
RE: New HP 28S, strange behaviour - Marcio - 03-21-2016, 08:52 PM



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