Search found 9 matches

by Joe Horn
Sun Jul 28, 2019 4:39 am
Forum: Software Library
Topic: RTC Calibration program
Replies: 20
Views: 1435

Re: RTC Calibration program

Also, when rounding to an integer, the program adds 0.5 and takes the integer part. That's okay for positive values, but is incorrect for negative values. (IP truncates towards zero, not towards negative infinity.) Is it well known that ENTER FP + IP correctly rounds to the nearest integer, even fo...
by Joe Horn
Sat Jul 13, 2019 11:54 pm
Forum: Software Library
Topic: Astrophysics programs
Replies: 3
Views: 316

Re: Astrophysics programs

Walter wrote:
Sat Jul 13, 2019 12:15 pm
Merci bien for sharing.

I assume KC being 273.15 ?
Yes; see program steps 41 and 42.
by Joe Horn
Tue May 14, 2019 6:34 pm
Forum: Usage tips, tricks and problem reports
Topic: DM42- clock losing time
Replies: 75
Views: 6468

Re: DM42- clock losing time

One more data point: 1 week after setting it exactly, my DM42 (SN: 00609) is 5.25 seconds fast. So that's about 22 seconds fast per month, which is better than some quartz crystal watches I've owned.
by Joe Horn
Mon Apr 29, 2019 5:06 am
Forum: DM42
Topic: Feature requests
Replies: 33
Views: 3889

Re: Feature requests

Also, I know why people complain about the keypad on the DM42. It's because sometimes you long-push a number and it double or triple pushes it. To me, it doesn't make sense that the buttons are auto-push when you hold them down. If you just removed the auto-button (or at least had an option to remo...
by Joe Horn
Sat Feb 02, 2019 4:42 am
Forum: Usage tips, tricks and problem reports
Topic: The Stack (according to Free42 Manual)
Replies: 19
Views: 1745

Re: The Stack (according to Free42 Manual)

I have just a question of understanding. I'm referring to the fine documentation of José Lauro Strapasson http://thomasokken.com/free42/42s.pdf According to the chapter 2.8 The Stack, the HP 42s has the following behavior: (...) But since the calculator’s display has only two lines just x and y lin...
by Joe Horn
Mon Nov 12, 2018 8:12 am
Forum: Usage tips, tricks and problem reports
Topic: How to enter a right pointing triangle into a string in prgm mode?
Replies: 5
Views: 1040

Re: How to enter a right pointing triangle into a string in prgm mode?

6 XTOA is one way to append ► to alpha. Is that the character you're looking for?
by Joe Horn
Wed Oct 10, 2018 12:02 am
Forum: Update Announcements
Topic: UPDATE: DMCP-3.10 / DM42-3.10
Replies: 71
Views: 8348

Re: UPDATE: DMCP-3.10 / DM42-3.10

Guenter wrote:
Tue Oct 09, 2018 9:38 pm
My two units 004 and 184 also freeze on 5 enter 1E10 y^x
Mine too, SN: 00609, fw 3.10.

Pressing the RESET hole yields this screen:
DM42 wrote:Oops, RESET in protected area.
Please, report following info
if the system had hung:
Reg Id d3770102, fw 3.10
by Joe Horn
Mon Oct 08, 2018 2:22 am
Forum: OFFIMG library
Topic: Newbie having fun
Replies: 4
Views: 1201

Newbie having fun

Won a DM42 at HHC 2018 and am sure having fun with it! Here are 9 off images I made.

Image

Download all 9 here: http://holyjoe.net/images/DM42/OFFIMG-JKH.zip