Sunday, September 19, 2021

Differences Between HP 32S and HP 32SII

 Differences Between HP 32S and HP 32SII




The HP 32S and HP 32SII are two classic RPN calculators which feature a rich set of scientific calculations, including logarithms, trigonometry, hyperbolic functions, integer part, fraction part, absolute value, statistics, and linear regression (y = mx + b).  Both are keystroke RPN programming programs with a capacity of 390 bytes.  


What are the differences? 


HP 32S


*  Production:  1988 - 1991


*  Keyboard Colors:  dark brown, almost black keys; one orange shift key


*  One key deals with scrolling:  down, with up shifting


HP 32SII


*  Production:  1991 - 2002


*  Keyboard Colors:  dark brown keys, orange shift key, blue shift key (1st edition); black keys, green shift key, pink shift key


*  One key deals with scrolling:  down, with up shifting


*  Has four sets of US/SI conversions:  kg/lb, °C/°F, cm/in, l/gal


*  Pressing the decimal key ( [ . ] ) twice will create fractions and mixed fractions.   The FDISP toggles between decimal approximation and fractions.  



Menu HP 32S HP 32SII
PARTS [ shift ] [ x<>y ]: IP, FP, RN, ABS [ |> ] [ √ ]: IP, FP, ABS (RN is on the keyboard)
PROB [ shift ] [ 3 ]: COMB, PERM, x!, R# [ |> ] e^x
STAT/LR One group of menus Split into four menus
SHOW [ shift ] [ . ] [ |> ] [ ENTER ]
SOLVE, ∫ [ shift ] [ 1 ] SOLVE: [ |> ] [ 7 ]; ∫: [ |> ] [ 8 ]
LOOP: ISG/DSE [ shift ] [ 5 ] ISG: [ <| ] [ 9 ]; DSE: [ |> ] [ 9 ]
TESTS [ shift ] [ × ]: offers < = ≠ > x?y: [ <| ] [ ÷ ], x?0: [ |> ] [ ÷ ]: offers < ≤ = ≠ > ≥

Hewlett Packard would later release updated versions of the 32S with the ill-fated 33S and the better but not perfect 35S.  

Source:

"HP-32S"  Wikipedia.  Last Edited June 28, 2021.  
https://en.wikipedia.org/wiki/HP-32S   Retrieved July 6, 2021

Eddie

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