HP-32S

The HP-32S was a programmable RPN

Reverse Polish notation

Reverse Polish notation is a mathematical notation wherein every operator follows all of its operands, in contrast to Polish notation, which puts the operator in the prefix position. It is also known as Postfix notation and is parenthesis-free as long as operator arities are fixed...

Scientific Calculator

Calculator

An electronic calculator is a small, portable, usually inexpensive electronic device used to perform the basic operations of arithmetic. Modern calculators are more portable than most computers, though most PDAs are comparable in size to handheld calculators.The first solid-state electronic...

introduced by Hewlett-Packard

Hewlett-Packard

Hewlett-Packard Company or HP is an American multinational information technology corporation headquartered in Palo Alto, California, USA that provides products, technologies, softwares, solutions and services to consumers, small- and medium-sized businesses and large enterprises, including...

in 1988 and discontinued in 1991. It continued the tradition of the HP-15C programmable RPN

Reverse Polish notation

Scientific Calculator

Calculator

. But some functions of the HP-15C were omitted (matrix calculations) and some were reduced in functionality (complex calculations), so to some extent it's more correct to say that the HP-32S rather expanded on the HP-34C

HP-34C

Part of the series of HP calculators. HP-34C Continuous Memory Calculator was an Advanced Scientific Programmable calculator that was differentiated by the fact that programs and storage were maintained in memory when the calculator was turned off , unlike most calculators of that time...

. It supported complex math, statistics

Statistics

Statistics is the study of the collection, organization, analysis, and interpretation of data. It deals with all aspects of this, including the planning of data collection in terms of the design of surveys and experiments....

, probability

Probability

Probability is ordinarily used to describe an attitude of mind towards some proposition of whose truth we arenot certain. The proposition of interest is usually of the form "Will a specific event occur?" The attitude of mind is of the form "How certain are we that the event will occur?" The...

, etc.

HP-32SII

The HP-32SII added algebraic math, fractions and a second shift key. This was introduced in 1991 and discontinued in 2002.

Sample Program

; This is an HP-32Sii version of the Euclidean algorithm

Euclidean algorithm

In mathematics, the Euclidean algorithm is an efficient method for computing the greatest common divisor of two integers, also known as the greatest common factor or highest common factor...

; to find the greatest common divisor

Greatest common divisor

In mathematics, the greatest common divisor , also known as the greatest common factor , or highest common factor , of two or more non-zero integers, is the largest positive integer that divides the numbers without a remainder.For example, the GCD of 8 and 12 is 4.This notion can be extended to...

.
; You run this by putting the two numbers for
;which you want to find the GCD

Greatest common divisor

and pressing "XEQ E"
E01 LBL E
E02 STO A
F01 LBL F
F02 ÷
F03 FP
F04 RCL A
F05 x
F06 1
F07 x>y?
F08 GTO G
F09 R(DOWN)
F10 PSE
F11 x<>A
F12 RCL A
F13 GTO F
G01 LBL G
G02 RCL A
G03 RTN

External links

HP's HP-32SII Page
The HP Museum's HP-32S Page
HP-32S and HP-32S II pictures on MyCalcDB (database about 70's and 80's pocket calculators)
HP-32S on Porter Electronics (Website where they are still available)

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