Could someone do a calculation on a real HP21?

01022019, 08:38 AM
Post: #1




Could someone do a calculation on a real HP21?
The Android App from Olivier De Smet the Go21 gives a different answer than the CCE33 HP21 Emulator does for a particular calculation...the calculation is 3^201, that is 3 to the 201 power...I no longer own an actual HP21, and I am curious what the answer is on a actual HP21. I am referring to the HP21 Woodstock calc...Thanks.


01022019, 09:31 AM
Post: #2




RE: Could someone do a calculation on a real HP21?
(01022019 08:38 AM)zeno333 Wrote: The Android App from Olivier De Smet the Go21 gives a different answer than the CCE33 HP21 Emulator does for a particular calculation...the calculation is 3^201, that is 3 to the 201 power...I no longer own an actual HP21, and I am curious what the answer is on a actual HP21. I am referring to the HP21 Woodstock calc...Thanks. ive only got the cce emulators classics come up with 7.968420280E95 HP21 7.9683417E95 HP65 7.968420280E95 HP67 7.968419661E95 HP31E 7,968419E95 Different families, different algorithms I suppose windows calculator 7.9684196662762430801634396610734e+95 cheers Tony 

01022019, 09:54 AM
Post: #3




RE: Could someone do a calculation on a real HP21?
PCalc 42 on iPad Pro
7.96841966627624E95 Denny 

01022019, 10:25 AM
Post: #4




RE: Could someone do a calculation on a real HP21?
7.9684203e95 on HP21 Serial No. 1512S41792


01022019, 11:21 AM
Post: #5




RE: Could someone do a calculation on a real HP21?  
01022019, 12:21 PM
(This post was last modified: 01022019 12:23 PM by Maximilian Hohmann.)
Post: #6




RE: Could someone do a calculation on a real HP21?  
01022019, 01:02 PM
Post: #7




RE: Could someone do a calculation on a real HP21?
(01022019 09:31 AM)teenix Wrote: HP21 7.9683417E95 Dear oh dear, it seems I missed that bug a long while back. I must have translated the original code incorrectly somewhere. Tonight, I wrote a small program to do the translation and the HP21 now comes up with...7.9684203e95 I have posted the new HP21 download to teenix.org. Thanks for the heads up zeno333 cheers Tony 

01022019, 07:41 PM
Post: #8




RE: Could someone do a calculation on a real HP21?
Thanks for finding anc correcting the bug in CCE33 for the HP21...I could not figure out what was going on, thought that there was 2 ROMs for the actual HP21 or something, but could not find anything on that online....Now I know, thanks.


01052019, 09:11 PM
Post: #9




RE: Could someone do a calculation on a real HP21?
(01022019 01:02 PM)teenix Wrote:(01022019 09:31 AM)teenix Wrote: HP21 7.9683417E95 Does the pic code need the same update? Cheers, Harald 

01062019, 04:55 AM
Post: #10




RE: Could someone do a calculation on a real HP21?
(01052019 09:11 PM)Harald Wrote: Does the pic code need the same update? Hi Harald, Sorry it took awhile to update the PIC code. There is a new update available at teenix.org. The PIC will need to be flashed in [ALL] mode and should be explained when the Windows software communicates with the PIC I had to do a text comparison of the microcode and this was the error that showed up. Not sure how it ended up that way, and even that the code worked at all. bad good 26F 0 > p if P = 0 287 13 > p if P = 13 cheers Tony 

01062019, 08:01 PM
Post: #11




RE: Could someone do a calculation on a real HP21?
(01062019 04:55 AM)teenix Wrote:(01052019 09:11 PM)Harald Wrote: Does the pic code need the same update? Hi Tony, Thanks a lot! I didn't mean to rush you, sorry if it came across like that. Cheers, Harald 

01062019, 09:54 PM
Post: #12




RE: Could someone do a calculation on a real HP21?  
01072019, 01:14 PM
Post: #13




RE: Could someone do a calculation on a real HP21?
(01022019 09:31 AM)teenix Wrote:(01022019 08:38 AM)zeno333 Wrote: The Android App from Olivier De Smet the Go21 gives a different answer than the CCE33 HP21 Emulator does for a particular calculation...the calculation is 3^201, that is 3 to the 201 power...I no longer own an actual HP21, and I am curious what the answer is on a actual HP21. I am referring to the HP21 Woodstock calc...Thanks. Running on some actual calculators: HP29C  7.968419661 E95 HP15C  7.968419664 E95 HP33s  7.96841966626 E95 HP50g  7.96841966626 E95 (for ' 3. 201 y^x ') HP50g  79684196662762430801634396.... (for ' 3 201 y^x ' in exact mode) Biggest question is how I ended up with so many calculators! 

01072019, 02:06 PM
Post: #14




RE: Could someone do a calculation on a real HP21?
(01072019 01:14 PM)cjmcc Wrote: Biggest question is how I ended up with so many calculators! Just about everywhere else, that's a valid question. Here, not so much... Addiction is never pretty Bob Prosperi 

01072019, 03:25 PM
Post: #15




RE: Could someone do a calculation on a real HP21?
(01072019 02:06 PM)rprosperi Wrote:(01072019 01:14 PM)cjmcc Wrote: Biggest question is how I ended up with so many calculators! Indeed. I'm not a collector myself but I have well in excess of 100 calculators and yet that question never ever crossed my mind. V. Find All My HPrelated Materials here: Valentin Albillo's HP Collection 

01072019, 03:56 PM
Post: #16




RE: Could someone do a calculation on a real HP21?  
01072019, 09:43 PM
Post: #17




RE: Could someone do a calculation on a real HP21?  
01092019, 08:04 AM
Post: #18




RE: Could someone do a calculation on a real HP21?
And here I was thinking I was strange for wanting a second fx9750gII, this one to be left unaltered (i.e. not 9860ised); or a more modern TI. My "hobby"s rather constrained by the fact I've got no real disposable cash, so I use what little I do get for justifying my other hobby, flight simulation. But that's another tale.
(Post 325) Regards, BrickViking HP50g Casio fx9750G+ Casio fx9750GII (SH4a) 

01092019, 11:00 PM
Post: #19




RE: Could someone do a calculation on a real HP21?
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Hi. Thomas: (01072019 09:43 PM)Thomas Okken Wrote:(01072019 03:25 PM)Valentin Albillo Wrote: I'm not a collector myself but I have well in excess of 100 calculators Not really. I'm not a collector in the traditional sense because a typical collector is usually very intent on getting a complete collection of some sort, either all the models in general or at least all models of a particular series (say the five Voyagers) or type (say all the financial ones), etc., and also most collectors are extremely eager to lay their hands on some rare models, say a Red Dot HP35,an HP94, an HP46, or an HP95, ... and also rare HP41C ROMs, accesories, books, etc. Me, I don't care at all. I'm not interested in getting a rare model or accessory, or a complete or partial collection, I only get those models I like for the best functionality or looks, and care nothing about the rest. For instance, I paid good money for an HP67 or an HP34C but a Red Dot HP35 or an HP21 or an HP80 leave me cold and I'm not interested in owning them. Same with 41C ROMs (I'm only interested in the Advantage ROM and the PPC ROM, the rest I don't care) and all RPL models except for the the clamshell HP28S (and that one only for the looks). So you see, I'm not a collector. At least not a typical one. Best regards. V. . Find All My HPrelated Materials here: Valentin Albillo's HP Collection 

01092019, 11:28 PM
Post: #20




RE: Could someone do a calculation on a real HP21?
From dictionary.com:
Quote:collector Striving for completeness in one's collection is not required. 

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