Calculator benchmark
08-08-2021, 04:46 PM (This post was last modified: 08-08-2021 06:56 PM by C.Ret.)
Post: #2
 C.Ret Member Posts: 241 Joined: Dec 2013
RE: Calculator benchmark HP-28S
Hi, nice benchmark, I always notice that not all calculators, especially programmable, are easy t use. Same of them didn't spare keystroke at all.

Here how I will setup, enter the table without repetitions to get all individual X and Y results on responsible HP-28S. I presume this can be done exactly the same way on a HP-28Csince I don't use here any specific capability of the 'S' version but only setup the solver menu for interactivity and practical use with spare keystrokes.

It is certainly possible to use the same trick on HP48/50 series, but I am unable to count the exact score since user interface, menu's access and keyboard are quite different on later RPL calculators.

HP-28S
f, [...] and (...) indicate respectively shift key, physical or soft-menu keystrokes.
Code:
SETUP                                            Description                              Keystrokes                                                f [LOGS]                                         Setup LOGS menu                             2 A  f X²     A    +  B  (LN)  - B  f X²  (LN)  =  [ENTER]                        Enter equation in the stack                14  [SOLV] (STEQ) (SOLVR)                            Start solver menu                           3
Total 19 keystrokes to setup equation $$A^2+A-LN(B) = LN(B^2)$$ ready for efficient use of the table entries in solver.

DATA ENTRY and (X;Y) results DISPLAY through the powerful solver menu interface:
Code:
 3.12 (A) 2.56 (B)  (LEFT=)  (RIGHT=)             Enter first data pair                                                                      and displaying X and Y                12            1.28 (B)  (LEFT=)  (RIGHT=)                                                    7            .64 (B)  (LEFT=)  (RIGHT=)                                                    6  6.24 (A)           (LEFT=)                       Y result unchanged                     6 12.48 (A)           (LEFT=)                       Y result unchanged                     7 24.96 (A)  .32 (B)  (LEFT=)  (RIGHT=)                                                   12           .16  (B)  (LEFT=)  (RIGHT=)                                                    6           1.32 (B)  (LEFT=)  (RIGHT=)                                                    7 18.59 (A)           (LEFT=)                       Y result unchanged                     7 17.63 (A)           (LEFT=)                       Y result unchanged                     7           2.64 (B)  (LEFT=)  (RIGHT=)                                                    7           5.28 (B)  (LEFT=)  (RIGHT=)                                                    7
Total 91 keystrokes for the Table entry and display of each X and Y results.
Score : 110 keystrokes

EDIT:

Just realize by writing this post that two more keystrokes can be spare when entering table 4th and 5th pair:
Since 12.48 is 2 * 6.24, instead of typing 12.48 (A), one may spare a troke by entering A [,] A [+] (A) ( or A [SPACE] A [+](A) ).
And the same trick can be used for the next entry : A [,] A [+] (A) instead of 24.96 (A) since $$24.96=2*12.48$$.

The final score of HP-28C/S may be reduce to 108 !
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 Messages In This Thread Calculator benchmark - jhallen - 08-08-2021, 05:42 AM RE: Calculator benchmark HP-28S - C.Ret - 08-08-2021 04:46 PM RE: Calculator benchmark - C.Ret - 08-08-2021, 07:26 PM RE: Calculator benchmark - jhallen - 08-08-2021, 08:05 PM RE: Calculator benchmark - OlidaBel - 08-11-2021, 12:40 PM RE: Calculator benchmark - C.Ret - 08-08-2021, 08:25 PM RE: Calculator benchmark - robve - 08-11-2021, 08:15 PM RE: Calculator benchmark - jhallen - 08-08-2021, 09:57 PM RE: Calculator benchmark - Valentin Albillo - 08-11-2021, 05:18 AM RE: Calculator benchmark - C.Ret - 08-12-2021, 04:24 PM RE: Calculator benchmark - robve - 08-12-2021, 09:13 PM RE: Calculator benchmark - robve - 08-12-2021, 11:37 PM RE: Calculator benchmark - Claudio L. - 08-09-2021, 08:14 PM RE: Calculator benchmark - jhallen - 08-11-2021, 04:33 AM RE: Calculator benchmark - Claudio L. - 08-11-2021, 05:14 PM RE: Calculator benchmark - OlidaBel - 08-11-2021, 09:00 AM RE: Calculator benchmark - jhallen - 08-11-2021, 01:16 PM RE: Calculator benchmark - OlidaBel - 08-11-2021, 01:33 PM RE: Calculator benchmark - Werner - 08-11-2021, 11:49 AM RE: Calculator benchmark - jhallen - 08-11-2021, 01:11 PM RE: Calculator benchmark - DavidM - 08-12-2021, 01:42 AM RE: Calculator benchmark - robve - 08-13-2021, 02:16 PM RE: Calculator benchmark - jhallen - 08-20-2021, 03:34 AM RE: Calculator benchmark - robve - 08-20-2021, 02:49 PM RE: Calculator benchmark - robve - 08-20-2021, 06:12 PM RE: Calculator benchmark - jhallen - 08-20-2021, 08:26 PM RE: Calculator benchmark - robve - 08-13-2021, 09:10 PM RE: Calculator benchmark - C.Ret - 08-15-2021, 01:13 PM RE: Calculator benchmark - robve - 08-15-2021, 02:31 PM RE: Calculator benchmark - Valentin Albillo - 08-15-2021, 03:47 PM RE: Calculator benchmark - robve - 08-15-2021, 04:43 PM RE: Calculator benchmark - Maximilian Hohmann - 08-15-2021, 05:16 PM RE: Calculator benchmark - robve - 08-15-2021, 06:30 PM RE: Calculator benchmark - Maximilian Hohmann - 08-15-2021, 11:19 PM RE: Calculator benchmark - robve - 08-16-2021, 01:01 AM RE: Calculator benchmark - EdS2 - 08-16-2021, 06:22 AM RE: Calculator benchmark - Valentin Albillo - 08-17-2021, 01:31 AM RE: Calculator benchmark - C.Ret - 08-19-2021, 04:37 AM RE: Calculator benchmark - Valentin Albillo - 08-19-2021, 04:55 AM RE: Calculator benchmark - C.Ret - 08-19-2021, 05:21 PM RE: Calculator benchmark - Valentin Albillo - 08-19-2021, 11:31 PM RE: Calculator benchmark - Werner - 08-20-2021, 02:58 PM RE: Calculator benchmark - C.Ret - 08-22-2021, 10:29 AM RE: Calculator benchmark - jhallen - 08-17-2021, 03:56 AM RE: Calculator benchmark - C.Ret - 08-18-2021, 08:20 PM RE: Calculator benchmark - jhallen - 08-19-2021, 12:23 AM RE: Calculator benchmark - jhallen - 08-22-2021, 06:42 PM RE: Calculator benchmark - robve - 08-23-2021, 10:51 PM RE: Calculator benchmark - robve - 09-22-2021, 06:14 PM RE: Calculator benchmark - robve - 09-25-2021, 01:25 AM RE: Calculator benchmark - robve - 10-02-2021, 10:08 PM

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