HP 12C Speed Test

[lvt]

(12-27-2022 02:14 PM)ctrclckws Wrote:  A better test is the calculation of Pi program at this page.
https://www.hpmuseum.org/cgi-sys/cgiwrap...i?read=899

On 1980's Era models, it runs in about 90 minutes.
On a 2018 unit, it runs in less than a minute.

My 12CP finished the test (12c code) in 45 minutes, there only is 0.00 as result on the screen.

So it must be one of the "slow" 12CP?

The calculator has been made by Kinpo factory in the Philippines in (I believe) 2021.

[ctrclckws]

There is a note in the 12CP program area about how to see the results of the 12CP version.

If you were using the 12C code, you have to RCL the memory registers.

RCL 0 through RCL 9, and RCL .0

or something similar.

[lvt]

(12-29-2022 10:24 AM)ctrclckws Wrote:  There is a note in the 12CP program area about how to see the results of the 12CP version.

If you were using the 12C code, you have to RCL the memory registers.

RCL 0 through RCL 9, and RCL .0

or something similar.

OK thanks, I will try the RCL function.

[lvt]

Indeed, after the test finished all the 20 registers R0-R9 and R.0-R.9 are filled with numbers, not sure what they mean though.

[ctrclckws]

Register 0 should have 3
Register 1 should have 1415926
Register 2 should have 5358979
And so on.

These are the digits of pi, in order.

[lvt]

(12-30-2022 12:52 PM)ctrclckws Wrote:  Register 0 should have 3
Register 1 should have 1415926
Register 2 should have 5358979
And so on.

These are the digits of pi, in order.

Thanks.

[lvt]

(08-22-2017 08:26 AM)Gamo Wrote:  I'm wondering how much the computation speed difference between HP 12C App for Android with Samsung S7 and Physical HP 12C+ by using this simple loop program.
The CPU speed is a lot difference between these two and let see how much difference.

01 ENTER
02 ENTER
03 +
04 GTO 03

1 ENTER 1 ENTER R/S for 1 minute R/S

Add two numbers 1+1 for 1 minute and compare the grand total result.

12C on Android 15796078 per 1 second = 263268
12C+ 75637 per 1 second = 1261

Gamo

HP-12C Platinum (4mhz cpu) : 2449 per second.

[lvt]

I tried the speed test described in this page :

https://www.hpmuseum.org/speed.htm

My result is 118, so 118 / 679 x 100 = 17.38% the HP 9100 speed.

[E.J.E.]

Considering that ‘2-liner’ loop:
1; Enter; Enter; Enter;
01 +
02. GoTo.01
and some results by:

(08-23-2017 08:18 PM)rprosperi Wrote:  Here are some results, using the same 2-liner, from past testing:

1985 12C: 499
1992 12C: 518
2003 12C (1x2032): 511
Early (silver, no undo) 12CP: 3150
Later (silver, w/ undo) 12CP: 1424
25th Ann 12CP: 1446
30th Ann 12C: 72,684
HP-25C: 535

I tested some of my HP 12C calculators:
HP 12C (sn 3534S03xxx Singapore, 3x LR44 CPU HP 1RR2-0001) = 507/min
HP 12C (1x CR2032 - CPU Agilent 2AF1-0002) = 534/min
HP 12C Prestige (sn CNA 6430xxx Brazil =CP; 1x CR2023 - CPU epoxi_on_pcb “BF123-11-3”) = 1458/min
HP 12C + (sn CNA 1410Pxx; 2x CR2032 - didn’t need to open; CPU not checked) = 80260/min

And for other HP machines or RPN based, using << LBL 0; +; GoTo 0 >>
HP 15C (sn 2826B31xxx Brazil, 3x LR44, CPU & IC: 1LH1-0302 & 1LQ9-0325) = 303/min
HP 42S (sn 3022B77xxx) = 2196/min
HP 35s (sn CNA 9320xxxx;) = 2801/min
WP 34S (from HP 20b sn CNG82801xxx) = 134702/min (2245/sec)
DM 42S (sn 8680; default mode) = 374799/min (6247/sec)

Finally, using the Hardware-based SUM function (inf: 1; sup: Y ; func: 1) on some popular Scientific calculators, just to provide a loose comparative figure:
Sharp EL-W516X (Y = 5000) @ 38sec = 7890/min
Casio FX-115ES (Y = 5000) @ 42sec = 7140/min
Casio FX-991LAX (Y = 30000) @ 52sec = 34600/min
Casio FX-991ES+ 2nd.Ed. (Y = 10000) @ 28sec = 21400/min

Untested (yet): I have a HP 20b unmodified and a HP 17bii+, which I didn’t think how to compare with this simple loop, in a fair way. Suggestions are appreciated.
I have an HP 41CV, but without batteries to test.
I and one HP48G+ and two HP 50G, but didn’t test them as they are much more powerful and RPL, (another class of HW) and looping could be implemented on different ways; however, if you suggest some reference program/function to check, I would supplement the testing info.

In overall, it was fun to test.

Greetings from Rio de Janeiro!
Euthymios
“E.J.E.”