HP Calculator Wiki

This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong.

===== Keyboard details =====

(Again, someone should please verify this and double check my work.)

==== Row/Column to Port translation ====

The keypad matrix row and column lines are connected to PIOC lines (port C, general purpose I/O).

The ON key is tied to PC10 and FWUP.  it is not part of the matrix.

^Port pin^Keypad connection^
|PC0        |Keypad column 0|
|PC1         |Keypad column 1|
|PC2         |Keypad column 2|
|PC3         |Keypad column 3|
|PC4         |Keypad column 4|
|PC5         |Keypad column 5|
|PC6         |Keypad column 6|
|PC11        |Keypad row 0|
|PC12        |Keypad row 1|
|PC13        |Keypad row 2|
|PC14        |Keypad row 3|
|PC15        |Keypad row 4|
|PC26        |Keypad row 5|

==== Key to Row/Column translation ====

| ^Row 0 ^Row 1 ^Row 2 ^Row 3 ^Row 4 ^Row 5 ^
^Column 0 |N |I/YR |PV |PMT |FV |Amort |
^Column 1 |CshFl |IRR |NPV |Bond |% |RCL |
^Column 2 |Input |( |) |+/- |Backspace | |
^Column 3 |Up |7 |8 |9 |Divide | |
^Column 4 |Down |4 |5 |6 |X | |
^Column 5 |Shift |1 |2 |3 |- | |
^Column 6 | |0 |. |= |+ | |

HP Calculator Wiki

User Tools

Site Tools

Page Tools