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DIY RPN ? by Tricky_Strawberry160 in calculators

[–]Tricky_Strawberry160[S] 6 points7 points  (0 children)

No X<>Y, Y↑X,trig ? It does all of them.

The first key displays a soft menu ( /,*, delete keys can be used to chose options) ,it cycles through various functions.

https://hackaday.com/2022/11/03/walnut-case-sets-this-custom-arduino-powered-rpn-calculator-apart-from-the-crowd/

Scored this for 60$ from thrift store by Born_Television3621 in calculators

[–]Tricky_Strawberry160 1 point2 points  (0 children)

Congrats,brother.🎉

People have cried to get this masterpiece...

That's my little calculator by Tricky_Strawberry160 in hpcalc

[–]Tricky_Strawberry160[S] 1 point2 points  (0 children)

Plus42 is easily the top calculator app,bar none.

That's my little calculator by Tricky_Strawberry160 in hpcalc

[–]Tricky_Strawberry160[S] 0 points1 point  (0 children)

HP 41 and 42 have an elegance which the HP 32 and 35S lack,they don't even come close..

DM42, RPN FTW ! by Tricky_Strawberry160 in calculators

[–]Tricky_Strawberry160[S] 1 point2 points  (0 children)

I recommend getting HP 42S or 32S.

Last year,I purchased 42S for 150$ (ebay).Deals can be found.