Search found 259 matches

by Thomas Okken
Tue Sep 25, 2018 11:29 am
Forum: Discuss!
Topic: 43S Poll (yes, here is one!)
Replies: 10
Views: 307

Re: 43S Poll (yes, here is one!)

Classics, Woodstocks, and Spices all featured coloured keys ... also Voyagers and Nuts did to less extent. Just the Pioneers started with monochrome keys. If you can see a color difference between the number keys and the other keys on the Nuts (meaning the 41 series, I assume) and the Voyagers, you...
by Thomas Okken
Tue Sep 25, 2018 11:18 am
Forum: Usage tips, tricks and problem reports
Topic: function %CH
Replies: 7
Views: 164

Re: function %CH

[...] 3) Added the %CH (!) Function in the Custom menu holding down this key will show "%CH" 4) Clear Variable [CLV] %CH 5) Hold custom button [%CH] now shows %CH. 6) after loading Finance.raw, the Custom button still shows %CH 7) after using [XEQ] >> [%Calc] >> [%CHG] the Custom button will show "...
by Thomas Okken
Tue Sep 25, 2018 4:31 am
Forum: Discuss!
Topic: 43S Poll (yes, here is one!)
Replies: 10
Views: 307

Re: 43S Poll (yes, here is one!)

My two all-time favorite HP calculators, the 41C/CV/CX and 42S, don't use a contrasting color for the number keys at all, and while the esthetics of that are debatable, I have never found it a problem. I suppose any frequent calculator user relies more on muscle memory than their eyes for finding th...
by Thomas Okken
Tue Sep 25, 2018 4:23 am
Forum: Usage tips, tricks and problem reports
Topic: function %CH
Replies: 7
Views: 164

Re: function %CH

The %CHG routine creates a menu of variables (VARMENU) with an entry %CH, but as you saw, that is not a label, and so, it should not interfere with the %CH function in the CUSTOM menu. Just make sure you assign %CH in the CUSTOM menu, not %CHG, and when you want to use it, make sure you really are i...
by Thomas Okken
Fri Sep 21, 2018 5:14 pm
Forum: Usage tips, tricks and problem reports
Topic: Adding elements to matrix programmatically
Replies: 3
Views: 154

Re: Adding elements to matrix programmatically

You can prevent the creation of the superfluous row by creating new rows just before you need them, and skipping that step on the first iteration since matrices always start out with at least one row: 1 1 DIM "factors" INDEX "factors" GROW SF 00 ... start loop ... FC?C 00 J+ STOEL ... end loop ... N...
by Thomas Okken
Thu Sep 20, 2018 7:27 pm
Forum: DM42
Topic: Bigger ALPHA register
Replies: 33
Views: 3531

Re: Bigger ALPHA register

I really liked that old -25 and used it a lot. It had such a small program memory though that I hardly ever used the SST key. Yeah, that program memory was so small that after a while I knew several of the more useful programs by heart (the root finder and moon rocket lander come to mind). I did ma...
by Thomas Okken
Thu Sep 20, 2018 12:17 pm
Forum: DM42
Topic: Bigger ALPHA register
Replies: 33
Views: 3531

Re: Bigger ALPHA register

Programmable HP calculators have done that at least since the HP-25! I actually owned an HP-25 and never noticed the feature. :lol: That's really weird! :shock: I dug a bit and that feature was, in fact, first introduced in the HP-25: One innovative feature of the HP-25 is the behavior of the SST (...
by Thomas Okken
Thu Sep 20, 2018 12:47 am
Forum: DM42
Topic: Bigger ALPHA register
Replies: 33
Views: 3531

Re: Bigger ALPHA register

eulerfan wrote:
Wed Sep 19, 2018 1:22 pm
The following new feature would be nice too: display the program+line+instruction to be executed if you press SST.
It already does that. Press and hold SST and it will show you the line that's about to be executed.

Programmable HP calculators have done that at least since the HP-25!
by Thomas Okken
Fri Aug 31, 2018 9:56 pm
Forum: DM42
Topic: Converting 3D vector to Cartesian triplet x,y,z
Replies: 1
Views: 235

Re: Converting 3D vector to Cartesian triplet x,y,z

Here are two approaches: Assuming the vector is in the X register, this code will put the first three elements in T, Z, and Y, while leaving the vector in X: EDIT ENTER ↓ ENTER ↓ ENTER EXITALL N.B. ↓ is not a short-hand for R↓; it is the matrix editor's "down one element" function, found near the en...
by Thomas Okken
Wed Aug 22, 2018 9:52 am
Forum: Discuss!
Topic: DM 48 .... WHY NOT ?!!!
Replies: 27
Views: 2355

Re: DM 48 .... WHY NOT ?!!!

Gee, I guess I shouldn't mention that I bought a used HP-50g on eBay a couple of weeks ago.
Nope. Better keep that to myself. :lol: