HP 25 User Manual

Prefix Clear .. . ...... .. .
Numb er Alteration Keys
Reciprocals .
Square Root s
Squa ring ..... ... . .
Using
Pi .. ..... . . . . . .
Percentages
.. ... ... . .. .. . ... . ... . . . . ... .. .
Storage Registers .. .
Trigonometric Functions
Polar/ Rectangular Coordinate Conversion
Logarithmic and Exponential Func tion s
Statistical Functions ....
Vector Summations
Section 5: Programming ... .. .. . .. ... .
What Is a Program? .. .... . . .. . . . . .. .. ... .. . . . . . . . . . .
Why
Wr ite Programs? . . . .... .. . .
Three
Modes of Operation
Introductory Program ..... . .. .. . .
Running a Program ..... ... .
GTO 00
..... .... .
Writing a Second Program ........ . . ... . . . . ....... . .
Interrupting Program Execution .... . . ... . ... . . ... . . . .
Branching . . . . . . . . . . . .. . . . . . . . .. . . . .
Editing a Program . .. . .... . ..... .
Program Applications .. . ... .. . . .. . .. . .. .... . ... .. . .
Afterword ... . ....... . .
50
51
52
52
53
53
54
55
59
62
63
66
70
73
73
73
74
75
78
78
79
82
87
91
97
99
Appendix A: Accessories, Service, and Maintenance 101
Standard Accessories ............. . 101
Optional Accessories .... .. ... . . . . . . . . .. . ..... .. ...... 101
AC Line Operation .......... 101
Battery Charging. . . . . . . . . . . . . ... . 102
Battery Operation . ... .... . . . . . . . . . . . . . . . . . . . . . 103
Battery Pack Replacement ... . ... .. . . . . .. .. . . . . . . . . . . 104
Service . . . . . . . . . . . . . . . . . . . . . . . 105
Te mp era ture Range .. 106
Warranty .. . . . . . . . . . . . . . . . . . . . . . . . . . . .. 106
Appendix
B: Improper Operations
Appendix
C: Stack Lift and LAST X
Index
. . 109
.... 111
.. . ......... . 113

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