Is HP getting serious about calculators?
in [HP48]
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From: John H Meyers on 10 Oct 2006 01:50 On Mon, 09 Oct 2006 23:45:41 -0500, JB wrote: > When was the last time that you solved a differential equation > with your PDA? Probably when Emu48 was loaded into it :) Are there any TI emulators for PDAs? [r->] [OFF]
From: John H Meyers on 10 Oct 2006 04:31 On Fri, 06 Oct 2006 12:28:03 -0500, VPN wrote: > 6) CAS changes flags, but instead it should do so internally only > and restore to user settings after the operation Easily solved with a simple "Vectored ENTER" program: http://groups.google.com/group/comp.sys.hp48/msg/03195ba7259b0c2a > 7) CAS should not demand purging variables Solvable with program mentioned at end of above post. > 8) Vectored ENTER back to operation in the Algebraic Mode Of limited utility (and interferes with desired "brainless TI-like action" when switching modes); there was also this serious problem with a previous attempt to provide it despite the above: http://groups.google.com/group/comp.sys.hp48/msg/87194d78226db433 > 13) Fractional display mode (like on the 39/40) Could be accomplished with simple "Vectored ENTER" program or your own SOL (why not write that?) > 14) two-stage CHOOSE (like on the 39/40) Elementary (with *unlimited* stages) in UserRPL: http://groups.google.com/group/comp.sys.hp48/msg/3639d2c188fbee81?dmode=source Of course, you might also pay Raymond to port his HP48 ML version (more exactly like the other calcs, I presume, inclusing speed), or make a port yourself (learn more by doing, including a better idea of how much work each desired feature requires :) > 16) [to better distinguish between identical labels in menus > which sometimes appear, even side by side, for different functions] > SOLVEVX should compile to SOLVX, and SIGMAVX => SIGMVX I think it might suffice that in menus like 120 MENU, which has two identical labels "SOLVE" (but the second is really for SOLVEVX), it might be better to *display* a *label* like "SOLVX" for function SOLVEVX, so that you could tell these apart. Similarly in menu 162, there are two consecutive identical labels "SIGMA", but the second is really for SIGMAVX, so it might be better to *display* a *label* like "SIGMX" for function SIGMAVX, so that you could tell these apart. Well, that's exactly what was done in the 48GX, in menu 73 for example, where if the label for the DROPN command had been "DROPN" then it would have been truncated to "DROP" (because of the different "minifont"), which would have duplicated another command name in the same menu, so someone astutely arranged to display the *label* for DROPN as "DRPN" instead. The menu key labeled "DRPN," however, did generate the normal DROPN function, and that menu's "review" function [RS "down"] also showed the true command name DROPN. Can't this be done for those ambiguous 49/50 labels as well? JYA? > 17) True 3D-plotting With polarized viewing glasses, and in color? ;-) > 19) User should be able to set the UNDO/REDO levels > as well as the CMD stack levels FWIW, we just showed how to get *unlimited* UNDO levels: http://groups.google.com/group/comp.sys.hp48/msg/6f6d3d3df50afc9e?dmode=source There has never been a REDO (why don't *you* make a program for a "reversible UNDO," i.e. swapping the current stack for the saved stack)? The four "CMD stack" levels each have a dedicated memory word, so this may not be expandable quite as you desire, but we have also provided CMD saving with a user-defined limit in another way, which even persists across warmstarts: http://groups.google.com/group/comp.sys.hp48/msg/097e7f215218c0ce?dmode=source > 20) put at least the "<)" symbol on the keyboard &%?(&?"!(/? Do you mean to trade it with some other existing key function? Which? If you mean to write it in as the *only* "alpha right-shift" character to be shown on the keyboard, that could be inconsistent and confusing (while including *all* such symbols might be highly distracting/cluttered); however, you can easily write it in yourself, with a fine-line pen :) And now for 20 extra things which churches ought to do...
From: Veli-Pekka Nousiainen on 10 Oct 2006 04:40 Volker Neurath wrote: X > I think that today it is possible to replace a high-end > CAS-grahics-calc by a PDA with software. > So, what arguments are there for using a high-end-calc instead of a > PDA? Dedicated calculator keyboard ???
From: Veli-Pekka Nousiainen on 10 Oct 2006 04:47 John H Meyers wrote: > On Fri, 06 Oct 2006 12:28:03 -0500, VPN wrote: > >> 6) CAS changes flags, but instead it should do so internally only >> and restore to user settings after the operation > > Easily solved with a simple "Vectored ENTER" program: > http://groups.google.com/group/comp.sys.hp48/msg/03195ba7259b0c2a > >> 7) CAS should not demand purging variables > > Solvable with program mentioned at end of above post. > >> 8) Vectored ENTER back to operation in the Algebraic Mode > > Of limited utility (and interferes with desired > "brainless TI-like action" when switching modes); > there was also this serious problem > with a previous attempt to provide it despite the above: > http://groups.google.com/group/comp.sys.hp48/msg/87194d78226db433 So the fixes for 6 & 7 which required the 8 then will never work in ALG mode.... >> 13) Fractional display mode (like on the 39/40) > > Could be accomplished with simple "Vectored ENTER" program > or your own SOL (why not write that?) ALG mode? >> 14) two-stage CHOOSE (like on the 39/40) > > Elementary (with *unlimited* stages) in UserRPL: > http://groups.google.com/group/comp.sys.hp48/msg/3639d2c188fbee81?dmode=source > > Of course, you might also pay Raymond to port his HP48 ML version > (more exactly like the other calcs, I presume, inclusing speed), > or make a port yourself (learn more by doing, including > a better idea of how much work each desired feature requires :) The CHOOSE is present in the 39/40 and so Fractional Display mode I think the HP doesn't pay Avenard for these features because they are not essential >> 16) [to better distinguish between identical labels in menus >> which sometimes appear, even side by side, for different functions] >> SOLVEVX should compile to SOLVX, and SIGMAVX => SIGMVX > > I think it might suffice that in menus like 120 MENU, > which has two identical labels "SOLVE" > (but the second is really for SOLVEVX), > it might be better to *display* a *label* like "SOLVX" > for function SOLVEVX, so that you could tell these apart. Good > Similarly in menu 162, there are two consecutive identical > labels "SIGMA", but the second is really for SIGMAVX, so > it might be better to *display* a *label* like "SIGMX" > for function SIGMAVX, so that you could tell these apart. Goood > Well, that's exactly what was done in the 48GX, in menu 73 > for example, where if the label for the DROPN command > had been "DROPN" then it would have been truncated to "DROP" > (because of the different "minifont"), which would have > duplicated another command name in the same menu, > so someone astutely arranged > to display the *label* for DROPN as "DRPN" instead. Gooood > The menu key labeled "DRPN," however, did generate > the normal DROPN function, and that menu's "review" function > [RS "down"] also showed the true command name DROPN. > > Can't this be done for those ambiguous 49/50 labels as well? JYA? I think easily >> 17) True 3D-plotting > > With polarized viewing glasses, and in color? ;-) Hologram video? Nope, just better than the current and with optional hidden line removal >> 19) User should be able to set the UNDO/REDO levels >> as well as the CMD stack levels > > FWIW, we just showed how to get *unlimited* UNDO levels: > http://groups.google.com/group/comp.sys.hp48/msg/6f6d3d3df50afc9e?dmode=source > > There has never been a REDO (why don't *you* make a program for a > "reversible UNDO," i.e. swapping the current stack for the saved > stack)? Not enough knowledge > The four "CMD stack" levels each have a dedicated memory word, > so this may not be expandable quite as you desire, but > we have also provided CMD saving with a user-defined limit > in another way, which even persists across warmstarts: > http://groups.google.com/group/comp.sys.hp48/msg/097e7f215218c0ce?dmode=source > >> 20) put at least the "<)" symbol on the keyboard &%?(&?"!(/? > > Do you mean to trade it with some other existing key function? Which? > > If you mean to write it in as the *only* "alpha right-shift" character > to be shown on the keyboard, that could be inconsistent and confusing > (while including *all* such symbols might be highly > distracting/cluttered); however, you can easily write it in yourself, > with a fine-line pen :) Pen is used, but novices keep on asking this question +oo ================================================ Actually just the CAS fix for flags, variables, etc. would be wonderful!!
From: JB on 10 Oct 2006 10:27
John H Meyers wrote: > On Mon, 09 Oct 2006 23:45:41 -0500, JB wrote: > > > When was the last time that you solved a differential equation > > with your PDA? > > Probably when Emu48 was loaded into it :) > > Are there any TI emulators for PDAs? > > [r->] [OFF] I don't know. Are there? |