(09-28-2015 02:01 AM)matthiaspaul Wrote: (09-27-2015 06:17 PM)Benoit Maag Wrote: What it does not have (vs HP-29C) is:
- ISZ/DSZ
- indirect addressing
- ABS function but this can be easily programmed as x<0? CHS
- Polar/Rectangular conversions (sorry Den)
There can easily be implemented but there are not any keys left to include them without complicating the UI - any suggestions?
The original layout (as far as I could decipher it on the photo):
Code:
GTO BST SST R/S
GSB LBL SV PSE
RTN TST LD VIEW
PRGM CHS /
F IP EEX FIX
G FP NOP SCI
7 8 9 *
SIN COS TAN STO
ASIN ACOS ATAN RCL
4 5 6 -
LN LOG SQRT x<>y
e^x 10^x x^2 Rv
1 2 3 +
1/x in>mm mi>km lb>kg
y^x mm>in km>mi kg>lb
< 0 . ENTER
CLR pi F>C LASTx
ALL >DRG C>F
I took the freedom to rearrange some keys in order to add some of the missing functions. My suggestion would be as follows:
Code:
GTO BST SST <
GSB LBL SV CLR/A
RTN TST LD PRGM
R/S 1/x CHS ENTER
F Rv x<>y LASTx
G SCI FIX VIEW
7 8 9 /
SIN COS TAN RCL
ASIN ACOS ATAN STO
4 5 6 *
LOG LN SQRT y^x
10^x e^x x^2 |x|
1 2 3 -
in>mm mi>km lb>kg F>C
mm>in km>mi kg>lb C>F
0 . EEX +
PSE IP pi P>R
NOP FP >DRG R>P
- Combined R/S run/stop and F/G modifiers to something like F/G/R/S. Normal function is as F/G modifier, but if pressed three times in a row, it will work as R and run the program. In a running program, pressing the key will work as S, that is, stop the program. This will make it work as F/G modifier again.
- Combined CLR and ALL. First F+CLR will invoke "Clear", either F+CLR+< (or F+CLR immediately followed by F+CLR again) will invoke "Clear All".
- Added P>R and R>P functions
- Added |x| function
- Rearranged some assignments for an IMHO more logical, easier to memorize layout and more convenient usage (although various compromises had to be made given the very limited number of keys):
- EEX directly invocable and part of the numpad
- pi is often on the same key as EEX
- IP/FP are semantically related to decimal points
- PSE is often on same key as 0
- RCL is used more often than STO
- Operations 1/x and +/- are frequently needed and typically located close to Enter
- Rv and x<>y are frequently needed stack manipulations and should be easily accessible
- LOG and 10^x in same column as 1 for mnemotical reasons
- LN and e^x in same colum as 2 for mnemotical reasons (e=2...) (Another possible order instead of LOG/LN/SQRT could be SQRT/LN/LOG, but it would not group SQRT near y^x.)
- Enter key above op keys, not below them. This makes the four op keys line up nicely with the numpad
- Delete (<) in upper right corner
Greetings,
Matthias
Matthias,
Thank you for the suggestions ! I will look into that.
BTW, there were a few things tha are not visible on the keyboard:
- pressing F/G 3 times currently loops back to no prefix (CLEAR-PREFIX) - maybe I can use NOP as the CLEAR-PREFIX option, or as R/S.
- G-ENTER actually calls an Escape Mode where the display brightness can be adjusted, the version of the software can be displayed and so on. So I would need a way to get there.
Benoit