HP 20 b Keyboard & Display Reference

HP 20b uses a new "soft touch & feel" keyboard technology.

Keyboard and Display:

1. Time Value of Money keys.
2. Cash Flows, IRR, and NPV menus.
3. Data and Statistics menus.
4. Large Input key.
5. Memory key (shift).
6. Up/Insert and Down/Delete keys.
7. Shift key.
8. On/Off key.
9. Mathematical functions (Divide, Multiply, Minus, Plus Keys).
10. Math Menu (shift).
11. Backspace key and Reset menu (shift).
12. Break-even menu.
13. Recall key and Store key (shift).
14. % key and Percent Calculation menu (shift).
15. Amortization anddDepreciation menus (shift). 
16. LCD Annunciator Display Area.

HP 20 b - How to:

HP 20 b 15-digit Precision

HP 20 b Adjusting the HP Calculator Display Contrast

HP 20 b Change Decimal Places to Display

HP 20 b Clearing Memory

HP 20 b Selecting the HP Operating Language

HP 20 b Switch to Algebraic Mode

HP 20 b Switch to Chain Mode

HP 20 b Switch to RPN Mode