Challenge: Generate a 64 in the display (RPN)
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09-03-2020, 10:53 AM
Post: #21
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RE: Challenge: Generate a 64 in the display (RPN)
I've got it down to 2 steps and 4 bytes on a 42S but I'm not sure how I can get it that low on a 41C.
There are only 10 types of people in this world. Those who understand binary and those who don't. |
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09-03-2020, 11:02 AM
Post: #22
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RE: Challenge: Generate a 64 in the display (RPN)
(09-03-2020 06:10 AM)Werner Wrote: Gene: 'generate a 64 in the X-register' Gene: My intent was to have the X register having the number 64, regardless of the original stack or any other initial settings of the calculator. |
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09-03-2020, 11:17 AM
Post: #23
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RE: Challenge: Generate a 64 in the display (RPN)
In that case, 41C: 5 steps
Werner 41CV†,42S,48GX,49G,DM42,DM41X,17BII,15CE,DM15L,12C,16CE |
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09-03-2020, 11:27 AM
(This post was last modified: 09-03-2020 11:33 AM by grsbanks.)
Post: #24
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RE: Challenge: Generate a 64 in the display (RPN)
I've got it down to 4 steps on a 41CX (or 41C/CV with an X-Func module).
Edit: Make that 3 steps. There are only 10 types of people in this world. Those who understand binary and those who don't. |
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09-03-2020, 11:59 AM
Post: #25
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RE: Challenge: Generate a 64 in the display (RPN)
Maybe we need two separate categories :-)
Those using common functions across most machines (+ - SIN COS LN X<>Y) etc. and those using functions only found on one machine? :-) I am looking forward to the seemingly wide variety of responses. None of them will be out of bounds but likely to generate "Why didn't I think of that?" feel free to start posting actual solutions at noon central time USA (that's 5 hours from this post). |
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09-03-2020, 01:14 PM
Post: #26
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RE: Challenge: Generate a 64 in the display (RPN)
Agree, too. For HP 42S, 2 steps, 4 bytes (but not quite 2 keystrokes!)
Andrés C. Rodríguez (Argentina) Please disregard idiomatic mistakes. My posts are mostly from old memories, not from current research. |
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09-03-2020, 01:27 PM
Post: #27
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RE: Challenge: Generate a 64 in the display (RPN)
(09-03-2020 05:23 AM)Valentin Albillo Wrote:(09-03-2020 04:43 AM)Mark Hardman Wrote: HP42s - 5 steps I start with a CLA just in case the calculator is already in Alpha mode with some characters entered. Ceci n'est pas une signature. |
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09-03-2020, 01:51 PM
Post: #28
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RE: Challenge: Generate a 64 in the display (RPN)
(09-03-2020 01:27 PM)Mark Hardman Wrote:(09-03-2020 05:23 AM)Valentin Albillo Wrote: In the HP42s and some models of the 41 it can be done in 2 steps. That is not necessary. The two-step solution works regardless of the initial state of the calculator. |
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09-03-2020, 02:39 PM
Post: #29
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RE: Challenge: Generate a 64 in the display (RPN)
Am I the only one not finding it?...!!!
Ps: I don’t want a clue, I just wanted to complain Thibault - not collector but in love with the few HP models I own - Also musician : http://walruspark.co |
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09-03-2020, 02:40 PM
Post: #30
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RE: Challenge: Generate a 64 in the display (RPN)
(09-03-2020 12:47 PM)Albert Chan Wrote: HP-12C, 8 steps, 2^6 = 64 Very nice but we're not supposed to start posting solutions until 12pm Central Time, so that's 17:00 UTC. There are only 10 types of people in this world. Those who understand binary and those who don't. |
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09-03-2020, 02:47 PM
Post: #31
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RE: Challenge: Generate a 64 in the display (RPN) | |||
09-03-2020, 03:18 PM
Post: #32
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RE: Challenge: Generate a 64 in the display (RPN)
(09-03-2020 01:51 PM)Thomas Okken Wrote:(09-03-2020 01:27 PM)Mark Hardman Wrote: I start with a CLA just in case the calculator is already in Alpha mode with some characters entered. After two seconds reflection it is obvious that the extra CLA is not necessary. What was I thinking? HP42s - 2 steps, 4 bytes Ceci n'est pas une signature. |
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09-03-2020, 03:19 PM
Post: #33
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RE: Challenge: Generate a 64 in the display (RPN)
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Hi, all: I think it's well past the deadline so I'm posting here my solutions in the clear, but first of all let me say that when issuing or taking a challenge, the wording is essential, you should mean non-ambiguously exactly what you mean if you're issuing the challenge and you should read exactly what was written when taking it. Gene says classic (not "Classic", "The Classics (1972)", etc.) and Gene says steps, not keystrokes, etc. For the HP42S (and some models of HP-41), my 2-step solution is: 01 "@" 02 ATOX For the HP-25 and many, many other models my 7-step solutions are: PI, ENTER, y^x, PI, SQRT, *, INT or CLX, EXP, EXP, PI, *, INT, X^2 Nice little challenge, Gene, thank you ! Regards. V. All My Articles & other Materials here: Valentin Albillo's HP Collection |
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09-03-2020, 03:28 PM
Post: #34
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RE: Challenge: Generate a 64 in the display (RPN) | |||
09-03-2020, 03:40 PM
(This post was last modified: 09-03-2020 03:44 PM by grsbanks.)
Post: #35
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RE: Challenge: Generate a 64 in the display (RPN)
(09-03-2020 03:19 PM)Valentin Albillo Wrote: I think it's well past the deadline Nope. Not for another 80 minutes. How do you get "@" in the alpha register? My 3-step solutions use other characters and one operation to adjust the ASCII code to 64. There are only 10 types of people in this world. Those who understand binary and those who don't. |
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09-03-2020, 03:55 PM
Post: #36
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RE: Challenge: Generate a 64 in the display (RPN)
Time is not constant. :-)
Ok, deadline lifted. Let's see those solutions! |
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09-03-2020, 03:55 PM
Post: #37
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RE: Challenge: Generate a 64 in the display (RPN)
Code: 00 { 4-Byte Prgm } Ceci n'est pas une signature. |
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09-03-2020, 03:57 PM
Post: #38
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RE: Challenge: Generate a 64 in the display (RPN)
HP-41C:
01 CLX 02 E↑X 03 10↑X 04 DEC 05 X↑2 06 END HP-42S: 00 { 4-Byte Prgm } 01 "@" 02 ATOX 03 END |
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09-03-2020, 04:52 PM
Post: #39
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RE: Challenge: Generate a 64 in the display (RPN) | |||
09-03-2020, 05:22 PM
(This post was last modified: 09-03-2020 07:39 PM by Massimo C..)
Post: #40
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RE: Challenge: Generate a 64 in the display (RPN)
HP 35s: 4 steps
<- -> °F ENTER + |
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