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HP-21
Owner's handbook manual
HP -21 Owner's Handbook Manual
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Contents
Table of Contents
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Table of Contents
Table of Contents
The HP-21 Scientific Pocket Calculator
Display
HP-21 Functions and Keyboard Index
Getting Started
Introduction
Power Onn
CLX Key Ottt E
Keying in Numbers
Keying in Negative Numbers
Operations
One-Number Functions
Two-Number Functions
Chain Calculations
A Word about the
Controlling the Display
Display Key
Fixed Decimal Point Display
Scientific Display
Automatic Display Switching
Keying in Exponentsof Ten
EEX and y
Overextended Calculation
How the HP-21 Works
The Stack
Initial Display
Reviewing the Stack
Clearing
Arithmetic-How the Stack Does It
Chain Arithmetic
Direction of Execution
Constant Arithmetic
Exchangingxandy
Error Display
Shift Key Cancel
Function Keys
Finding Reciprocals
Finding Square Roots
Using T
Manual Storage Register
Storing and Recallingdata
Storage Register Arithmetic
Trigonometric Functions
Polar/Rectangular Coordinate Conversion
Logarithmic and Exponential Functions
Logarithms
Raising Numbers to Powers
Afterword
Appendix A: Accessories, Service, and Maintenance
Standard Accessories
Calculator Operation
Battery Operation
Battery Pack Replacement
Seivice
Low Power
Blank Display
Temperature Range
Warranty
In-Warranty
Out-Of-Warranty
Obligation to Make Changes
Shipping Instructions
Appendix B: Improper Operations
Index
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