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General| Brand | HP |
|---|---|
| Model | HP-65 |
| Category | Calculator |
| Language | English |
Outlines the three primary methods of using the HP-65 calculator: manual calculation, prerecorded programs, and custom programs.
Details various methods for clearing calculator memory, registers, and the display.
Explains how the HP-65 display works, its modes, and indicators like low battery.
Instructions for entering numbers in scientific notation and with exponents (EEX).
Explains the function and usage of the Last X register for error recovery.
Describes how the stack lift feature works and the keys that affect its status.
Introduces the nine addressable registers (R1-R9) and their general purpose.
Details how to store numbers in registers and recall them to the X-register.
Explains operations like Roll Up, Roll Down, and Exchange for stack manipulation.
Covers trigonometric functions and angle conversions using degrees, radians, and grads.
Explains how to set and use the calculator's angular modes (degrees, radians, grads).
Describes octal/decimal conversions and decimal to DDDDD.MMSS angle format conversions.
Details logarithmic, exponential, power functions, reciprocals, and factorials.
How to view and understand stored programs using the program pointer and codes.
Explains how to start, stop, branch, and define functions within programs.
Covers how to revise, insert, delete program steps, and manage program memory.
Details using flags and relational tests for programmed decisions and loops.
Discusses the accuracy limits, rounding errors, and error sources of the HP-65.
Lists the standard accessories included with the HP-65.
Lists optional accessories available for purchase.
Steps for checking the calculator's functionality and battery status.
Indicators and actions for low battery conditions.
Troubleshooting steps for a blank display.
Details the warranty terms and conditions for the HP-65.
Information on repairs and services for out-of-warranty products.
Procedures for returning the product for service or repair.
Step-by-step guide for replacing the battery pack.
Lists common mistakes made during programming and operation.
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