Enter vs. =

[Albert Chan]

I think the reason algebraic input cause more "errors" is user doing too much at once.
There is no rule that forbid algebraic calculator to calculate in steps.

This reduces many unnecessary parenthesis groupings, with much simpler sub-expression.
Showed intermediate results allowed some error checking, just like RPN.

This is especially true for EOS calculator, with saved previous calculation in ANS.
Example from the article: (3.3 + 4.5) * (5.2 + 6.1) * (7 - 3 + 8.4) = 1092.936

EOS: (implied ANS when start with +, -, *, /, sqrt ...)
3.3 + 4.5 =
* ( 5.2 + 6.1 =
* ( 7 - 3 + 8.4 =

RPN:
3.3 Enter 4.5 +
5.2 Enter 6.1 + *
7 Enter 3 - 8.4 + *

EOS can scroll back previous calculations, to confirm correct user input.
I think EOS have slight edge overall. Not just me, the market say so too ...