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General| Type | Scientific |
|---|---|
| Display | LCD |
| Power Source | Battery |
| Display Digits | 10 |
| Battery | CR2032 |
Instructions for turning the HP-20S calculator on and off.
Demonstrates the use of arithmetic operators (+, -, x, /, ^) and chained calculations.
Explains the calculator's display cursor, clearing functions, and memory clearing.
Describes the status indicators displayed on the calculator screen.
Details the function of shift keys, the INPUT key, and the SWAP key.
Explains how to control number display format, decimal places, and scientific notation.
Covers entering and displaying numbers in scientific and engineering notation.
Explains how chain calculations are interpreted based on operator priority.
Demonstrates how to use parentheses to group operations and control calculation order.
Details how to use storage registers (R0-R9) for storing and recalling numbers.
Covers basic math functions like square root, logarithms, and antilogarithms.
Explains percentage calculations and percent change operations.
Details trigonometric modes (DEG, RAD, GRAD) and functions (SIN, COS, TAN).
Explains converting between rectangular and polar coordinates.
Covers factorial, combinations, and permutations calculations.
Provides conversions for common units like kg, lb, C, F, cm, in.
Instructions for switching between Decimal, Hexadecimal, Octal, and Binary modes.
Explains arithmetic operations using hexadecimal, octal, and binary bases.
Steps for entering data for one- and two-variable statistics.
Lists key statistical functions and their results (n, Σx, Σx², etc.).
Calculations for mean, standard deviation, and summation statistics.
Finding the best-fit line for data and estimating values.
Steps to create new programs, including line numbers and keycodes.
Instructions for entering programs into memory and supplying data.
Methods for executing stored programs using XEQ or GTO/R/S.
Example program demonstrating register use for Pythagorean theorem calculation.
Explains how to create and call subroutines within programs.
Covers program control using GTO branching and conditional statements.
Program to find solutions for f(x) = 0 using the secant method.
Calculates approximate integrals using Simpson's rule.
Performs calculations with complex numbers in rectangular form.
Solves quadratic equations (ax²+bx+c=0) for real and complex roots.
Fits data to power, exponential, or logarithmic models.
Information on getting support and answers to frequently asked questions.
Details about calculator power source, battery life, and low power indicators.
Specifies operating temperature and humidity limits for the calculator.
Guidelines to determine if the calculator requires service.
Details on what is covered and not covered by the product warranty.
Information regarding FCC compliance and radio frequency energy.
Contact details for calculator support and using the manual.
Contact details for obtaining service and repair information.
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