stack lift and change sign
08-31-2014, 08:50 PM
Post: #51
 walter b On Vacation Posts: 1,957 Joined: Dec 2013
RE: stack lift and change sign
Read the first 30 pages of Wickes' "41-48 transitions" who basically states that the HP-48 just extends the way the HP-41 calculates, allowing also objects which aren't just plain real numbers. Still don't get why there's such a bohai about "stack lift" - to me the stack maneuvers of the 48 aren't any better, just different.

Let's look how e.g. (1+2)*(4+5) is calculated on an HP-48 as on an HP-42:

1 ENTER 2 + 3 ENTER 4 + *
Code:
 HP-48:  Entry line:  1:    2:        HP-42S: X:    Y:    Z:           1                1                           1                          ENTER                1                       1      1                   2                2   1                       2      1                    +                    3                       3                           4                4   3                       4      3                  ENTER                4     3                 4      4      3          5                5   4     3                 5      4      3          +                    9     3                 9      3                   *                   27                      27

On the 42S, ENTER always duplicates - on the 48, ENTER only duplicates if the entry line is empty. Personally, I prefer a function doing the same always (remember you've no chance to follow that weird behavior of ENTER on a single line display).

d:-/
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 Messages In This Thread stack lift and change sign - Thomas Klemm - 08-10-2014, 09:48 AM RE: stack lift and change sign - walter b - 08-10-2014, 11:44 AM RE: stack lift and change sign - d b - 08-11-2014, 06:08 AM RE: stack lift and change sign - Paul Dale - 08-11-2014, 06:21 AM RE: stack lift and change sign - Massimo Gnerucci - 08-11-2014, 06:23 AM RE: stack lift and change sign - walter b - 08-27-2014, 11:30 AM RE: stack lift and change sign - d b - 08-27-2014, 02:32 PM RE: stack lift and change sign - walter b - 08-27-2014, 03:57 PM RE: stack lift and change sign - Massimo Gnerucci - 08-27-2014, 06:41 PM RE: stack lift and change sign - Andreas - 08-27-2014, 07:40 PM RE: stack lift and change sign - d b - 08-29-2014, 04:45 AM RE: stack lift and change sign - walter b - 08-29-2014, 09:15 AM RE: stack lift and change sign - Massimo Gnerucci - 08-29-2014, 09:29 AM RE: stack lift and change sign - walter b - 08-29-2014, 09:47 AM RE: stack lift and change sign - Mark Hardman - 08-29-2014, 03:56 PM RE: stack lift and change sign - walter b - 08-29-2014, 04:11 PM RE: stack lift and change sign - Mark Hardman - 08-29-2014, 05:16 PM RE: stack lift and change sign - walter b - 08-29-2014, 07:54 PM RE: stack lift and change sign - Gerson W. Barbosa - 08-29-2014, 06:15 PM RE: stack lift and change sign - walter b - 08-31-2014, 06:23 AM RE: stack lift and change sign - walter b - 08-29-2014, 08:21 PM RE: stack lift and change sign - Mark Hardman - 08-29-2014, 08:51 PM RE: stack lift and change sign - Thomas Radtke - 08-10-2014, 12:14 PM RE: stack lift and change sign - Thomas Klemm - 08-10-2014, 12:44 PM RE: stack lift and change sign - Thomas Ritschel - 08-10-2014, 01:27 PM RE: stack lift and change sign - Katie Wasserman - 08-10-2014, 01:50 PM RE: stack lift and change sign - Les Bell - 08-11-2014, 01:41 AM RE: stack lift and change sign - Sylvain Cote - 08-10-2014, 02:00 PM RE: stack lift and change sign - Paul Dale - 08-11-2014, 06:44 AM RE: stack lift and change sign - ElectroDuende - 08-28-2014, 12:18 PM RE: stack lift and change sign - Thomas Radtke - 08-28-2014, 02:21 PM RE: stack lift and change sign - Marcus von Cube - 08-28-2014, 08:07 PM RE: stack lift and change sign - walter b - 08-28-2014, 08:33 PM RE: stack lift and change sign - Paul Dale - 08-28-2014, 10:05 PM RE: stack lift and change sign - Thomas Radtke - 08-28-2014, 10:17 PM RE: stack lift and change sign - walter b - 08-29-2014, 12:55 PM RE: stack lift and change sign - Thomas Radtke - 08-29-2014, 01:10 PM RE: stack lift and change sign - walter b - 08-29-2014, 01:25 PM RE: stack lift and change sign - Thomas Radtke - 08-29-2014, 01:43 PM RE: stack lift and change sign - walter b - 08-29-2014, 02:04 PM RE: stack lift and change sign - Thomas Radtke - 08-29-2014, 02:13 PM RE: stack lift and change sign - walter b - 08-29-2014, 02:25 PM RE: stack lift and change sign - Thomas Radtke - 08-29-2014, 02:37 PM RE: stack lift and change sign - walter b - 08-29-2014, 03:05 PM RE: stack lift and change sign - Paul Dale - 08-31-2014, 07:25 AM RE: stack lift and change sign - RMollov - 08-31-2014, 09:40 AM RE: stack lift and change sign - walter b - 08-31-2014, 11:26 AM RE: stack lift and change sign - walter b - 08-31-2014 08:50 PM RE: stack lift and change sign - Paul Dale - 08-31-2014, 09:52 PM RE: stack lift and change sign - walter b - 09-01-2014, 10:36 AM RE: stack lift and change sign - Paul Dale - 09-01-2014, 11:38 AM RE: stack lift and change sign - walter b - 09-01-2014, 06:56 PM RE: stack lift and change sign - ElectroDuende - 08-29-2014, 01:00 PM RE: stack lift and change sign - walter b - 08-29-2014, 09:21 PM RE: stack lift and change sign - Thomas Klemm - 08-29-2014, 07:40 PM RE: stack lift and change sign - Thomas Klemm - 06-23-2015, 07:43 PM

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