The following tables display the features and functions of HP scientific calculator models for comparison. It compares the features of the 6s, 6s solar, 20s, 30s, and 32sii calculators.
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HP Scientific Calculators  Scientific Calculator Product Comparison
Physical and operating features
Feature

HP 6s/6s solar

HP 20s

HP 30s

HP 32sii

Display size (LCD)

1 line x 12 char.

2 lines

2 lines

1 line x 12 characters

Solar panel

6s solar only
 
Entry system logic

Algebraic

Algebraic

Algebraic

RPN

Numeric precision Internal

12 digits

15 digits

24 digits

12 digits

Numeric precision displayed

10 digits

12 digits

10 digits

12 digits

Numeric precision exponent

+/ 99

+/ 499

+/ 99

+/ 499

Math features
Feature

HP 6s/6s solar

HP 20s

HP 30s

HP 32sii

Universal powers and roots

X

X

X


Boolean logic

X
 
Addition +, Subtraction , Multiplication *, Division ÷ , Square root v , Inverse 1/x

X

X

X

X

e ^{x}, y^{x}, In, 10^{x}, Percentage, Pi, 1/x, Factorial n!

X

X

X

X

Fractions and fraction/decimal conversions

X

X

X


Trigonometric functions / inverses

X

X

X

X

Feature

HP 6s/6s solar

HP 20s

HP 30s

HP 32sii

Degrees, Radians, or Grads mode

X

X

X


Root finder

X (see note)

HP solve

HP Solve


Numeric integration

X (see note)

X


Complex number functions

X (see note)

X


Matrix operations (3x3)

X (see note)
 
Hyperbolics/ inverses

X

X

X


Polynomial root finder, Taylor series

X


Absolute value, round, floor, ceiling

X


Integer and fractional part of a number

X


Modulo function

X

Scientific features
Feature

HP 6s/6s solar

HP 20s

HP 30s

HP 32sii

Decimal hours to hours, minutes, seconds conversions

X

X

X


Polar/rectangular conversions

X

X

X

X

Angle conversions

X

X

X

X

Base conversions and arithmetic

X

X

X


Unit conversions

X

X

X

Statistical features
Feature

HP 6s/6s solar

HP 20s

HP 30s

HP 32sii

Total, sumX, sumX2, sumY, sumY^{}2 sumXY

Cumulative (single variable)

Cumulative

Cumulative

Cumulative

Sample standard deviation, mean

X

X

X

X

Population standard deviation

X

X

X


Weighted mean

X

X


Linear regression

X

X

X


Combinations, permutations

X

X

X


Curve fit (LinearLIN, LogarithmicLOG, ExponentialEXP, PowerPOW)

X^{1}

X^{1}

^{1}This item is included in the program library/manual.
Customizing features
Feature

HP 6s/6s solar

HP 20s

HP 30s

HP 32sii

Levels of subroutines

4

7


Branching

X

X


Alpha listings

X


Solve for any variable

X


Flags

12


Builtin programs/equations

6
 
Indexed looping

X


Indirect addressing

X


Alpha prompts in programs

X


Number of programs/formulas

16

27


Root finder

X^{1}

HP Solve

HP Solve


Number of steps/regs or bytes

99 steps/10 regs

120 bytes/10 regs

384 bytes/33 regs

^{1}This item is included in the program library/manual.
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