Search found 102 matches

by pauli
Mon Jan 04, 2021 8:53 am
Forum: Discuss!
Topic: 43S News
Replies: 986
Views: 254651

Re: 43S News

Finally, acceptance of long integer arithmetic :)


Pauli
by pauli
Sat Nov 07, 2020 12:09 pm
Forum: Usage tips, tricks and problem reports
Topic: ROT XY on Floating Point numbers
Replies: 6
Views: 405

Re: ROT XY on Floating Point numbers

Why 52 bits when using binary reals? 53 should be possible.
by pauli
Tue Nov 03, 2020 12:52 pm
Forum: Discuss!
Topic: 43S Alternative key layout --> WP43C
Replies: 1205
Views: 228966

Re: 43S Alternative key layout --> WP43C

I understand the problem now: you're trying to display the cumulative integral.
The horizontal line segments seem like a reasonable idea as might joining the corners of the squares in this image. The integral and the function should only interfere in a small number of places.

Pauli
by pauli
Mon Nov 02, 2020 1:00 pm
Forum: Discuss!
Topic: 43S Alternative key layout --> WP43C
Replies: 1205
Views: 228966

Re: 43S Alternative key layout --> WP43C

For integration, why not draw the trapezoids? Failing that, the midpoint seems like a reasonable option. It could be misleading since you'll be displaying a rectangle but computing a trapezoid. I.e. the height of the rectangle bears little relationship to the value of the function at the midpoint. F...
by pauli
Fri Oct 23, 2020 12:40 pm
Forum: DM41X
Topic: DM41X arrived in Australia!
Replies: 9
Views: 768

Re: DM41X arrived in Australia!

Most mail to Oz comes by air these days. By ship would have taken *must* longer.

There are a lot fewer planes flying here than the USA.


Pauli
by pauli
Thu Oct 22, 2020 12:13 pm
Forum: DM41X
Topic: DM41X arrived in Australia!
Replies: 9
Views: 768

Re: DM41X arrived in Australia!

Mine was delivered yesterday.

Pauli
by pauli
Thu Oct 22, 2020 12:12 pm
Forum: Discuss!
Topic: 43S Alternative key layout --> WP43C
Replies: 1205
Views: 228966

Re: 43S Alternative key layout --> WP43C

Nice work tracking the source of the error. Gathering some appreciation for `(-1)^x` function is useful nonetheless. `cos(\pi x)` appears in a lot of reflection formulae.
by pauli
Wed Oct 21, 2020 10:04 am
Forum: Discuss!
Topic: 43S Alternative key layout --> WP43C
Replies: 1205
Views: 228966

Re: 43S Alternative key layout --> WP43C

Jaymos wrote:
Mon Oct 19, 2020 2:05 am
[Detail FIB test.
I think your programs can be simplified by using the `(-1)^x` command. For real and complex arguments, it does the `cos(\pi x)` computation without loss of accuracy.


Pauli
by pauli
Fri Sep 25, 2020 1:33 pm
Forum: Discuss!
Topic: New DM42S hardware
Replies: 36
Views: 4047

Re: New DM42S hardware

What are the differences between the old and the new hardware??
by pauli
Wed Sep 23, 2020 7:32 am
Forum: Discuss!
Topic: Is purchasing DM16L as well as DM42 redundant?
Replies: 28
Views: 2187

Re: Is purchasing DM16L as well as DM42 redundant?

The 16C has a lot more binary functions than the 42, I generally do a lot of these in my head rather than using a calculator but some people swear by it. The 16C supports floating point which will do the op-amp gain calculations via a program. The 34S does all of both and more but it's getting more ...