||Monte Carlo, Pioneer
Precision, Input mode
||Scientific, 12 BCD digits,
exponent ±499, Algebraic
||Yes, keystrokes, symbolic labels 0-9, A-Z.
||10 data registers (0-9), 99
program steps, permanent memory
||12 digit 7-segment LCD plus sign
||Probability functions, extended
statistics, 6 built-in applications
that can be loaded into program memory using the LOAD key: A: One
test statistics, B: Two sample test statistics, C: Linear regression
statistics, D: Chi-square test statistic, E: Binominal probability
F: Time value of money.
||3.1.1989 ($49.95) - approx. 1992
||3x small button sized cells
||Length 14.7cm, Width 7.8cm,
||In principle a very powerful
machine - but the lack of the RPN entry
mode really makes things unintuitve. For example the big INPUT key: On
RPN machines this would be the prominent ENTER key but here it doesn't
have much functionality. It is only used to separate inputs for certain
functions that require two arguments, like permutation and
So you ask why addition or substraction would not be a function of two
arguments? Well, right here the confusion begins! I tried "2 INPUT 3 +"
but the result was not what I had hoped for.
The same applies to the other algebraic models: HP-10B,
and HP-27S. The HP-30S
is different in a sense that it was originally designed as an
model and didn't have to reuse the typical RPN style keyboard layout
the big ENTER key. The HP-17BII
and HP-49G are different as well
they offer both RPN and algebraic mode.
Interestingly, the algebraic models were introduced only in
1980s with the HP-18C in 1986
probably the first one. Also, half of these calculators are
type models: The HP-10B, HP-18C,
and to some extent the
HP-27S. A number
of developments probably influenced this decision:
Scientist were not using handheld calculators any more but rather the
more powerful PCs and laptops.
Business people never liked (or understood?) RPN.
Handheld calculator sales declined in general due to more widespread
of PCs/laptops. To open a new market students and highschool kids had
be targeted with cheap and algebraic models (ie. HP-20S,