HP 25 User Manual

132 pages

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Table of Contents4
The HP-25 Programmable Scientific Calculator9
Function Key Index9
Memory10
Programming Key Index10
The HP-25 Means Painless Programming13
Manual Problem Solving13
Programmed Problem Solving14
Section 1: Getting Started17
Display17
Keyboard17
Keying in Numbers18
Negative Numbers18
Clearing19
Functions19
Chain Calculations22
A Word about the HP-2526
Section 2: Controlling the Display29
Display Control Keys29
Automatic Display Switching34
Keying in Exponents of Ten35
Calculator Overflow37
Error Display37
Section 3: the Automatic Memory Stack the Stack39
Initial Display39
Manipulating Stack Contents39
The39
Clearing the Stack MMM Key42
One-Number Functions and the Stack44
Two-Number Functions and the Stack44
Chain Arithmetic46
Order of Execution49
Constant Arithmetic50
Section 4: Function Keys53
Last X53
Prefix Clear54
Number Alteration Keys55
Reciprocals56
Square Roots56
Squaring57
Using Pi57
Percentages58
Storage Registers59
Trigonometric Functions63
Polar/Rectangular Coordinate Conversion66
Logarithmic and Exponential Functions67
Statistical Functions70
Vector Summations74
Section 5: Programming77
What Is a Program77
Why Write Programs77
Three Modes of Operation78
Introductory Program79
Running a Program82
Gto 0082
Writing a Second Program83
Interrupting Program Execution86
Branching91
Editing a Program95
Program Applications101
Afterword103
Appendix A: Accessories, Service , and Maintenance105
Standard Accessories105
Optional Accessories105
AC Line Operation105
Battery Charging106
Battery Operation107
Battery Pack Replacement108
Service109
Temperature Range110
Warranty110
Appendix B: Improper Operations113
Appendix C: Stack Lift and LAST115
Index117

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HP 25 Specifications

General

Power Source	Rechargeable battery pack
Programming Steps	49
Release Year	1975
Functions	Trigonometric, logarithmic, statistical
Type	Scientific
Dimensions	148 x 80 x 14 mm

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