Search found 81 matches

by pauli
Fri Sep 25, 2020 1:33 pm
Forum: Discuss!
Topic: New DM42S hardware
Replies: 19
Views: 664

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: 9
Views: 495

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 ...
by pauli
Mon Sep 21, 2020 11:12 am
Forum: Discuss!
Topic: My new Raspberry Pi based WP43S
Replies: 7
Views: 387

Re: My new Raspberry Pi based WP43S

Great work.

Wolfram's Mathematica engine is available for the PI & would make for a very nice core.
by pauli
Sat Aug 22, 2020 6:04 am
Forum: Discuss!
Topic: WP 43S Pilot Run (Poll!)
Replies: 213
Views: 41207

Re: WP 43S Pilot Run (Poll!)

Winter is the best time of year to be outside here. Summer isn't so pleasant. So yes, the shed has priority.

Pauli
by pauli
Fri Aug 21, 2020 11:10 am
Forum: Software Library
Topic: Median estimator
Replies: 3
Views: 264

Re: Median estimator

I don't have the article anymore, I've only got the reference from my thesis.

Pauli
by pauli
Fri Aug 21, 2020 10:01 am
Forum: Software Library
Topic: Median estimator
Replies: 3
Views: 264

Re: Median estimator

If the data can be stored, the median (or any quantile) can be computed in linear time. A long time ago, I looked into estimation of the mode. This is a long researched subject, the only reference I've to hand is: T. Dalenius: The Mode - A Neglected Statistical Parameter , Journal of the Royal Stati...
by pauli
Fri Aug 21, 2020 9:56 am
Forum: Discuss!
Topic: WP 43S Pilot Run (Poll!)
Replies: 213
Views: 41207

Re: WP 43S Pilot Run (Poll!)

The delay is my fault at the moment.


Pauli
by pauli
Sat Aug 08, 2020 11:07 am
Forum: DM1x/DM1xL
Topic: [DM16] 8 bit reversal? Easiest way?
Replies: 10
Views: 787

Re: 8 bit reversal? Easiest way?

This second version does three steps (values are in hexadecimal): Multiply by 202020202 which copies the byte five times across 41 bits. AND with 10884422010 which selects the bits in the correct positions based on ten bit bytes. Remainder 3FF (= 2^10-1 ) brings everything together. It is helpful to...
by pauli
Fri Aug 07, 2020 11:35 am
Forum: DM1x/DM1xL
Topic: [DM16] 8 bit reversal? Easiest way?
Replies: 10
Views: 787

Re: 8 bit reversal? Easiest way?

How about this alternative? It doesn't involve a loop but requires the WSIZE to be at least 42: 001 LBL A 002 HEX 003 2 004 0 005 2 006 0 007 2 008 0 009 2 010 0 011 2 012 * 013 1 014 0 015 8 016 8 017 4 018 4 019 2 020 2 021 0 022 1 023 0 024 AND 025 3 026 F 027 F 028 RMD 029 RTN It's twice as long...
by pauli
Fri Jun 19, 2020 10:38 am
Forum: Discuss!
Topic: Who uses the 43S simulator under Windows, Linux, or on a Mac?
Replies: 44
Views: 5659

Re: Who uses the 43S simulator under Windows, Linux, or on a Mac?

1mm.Hg ≠ 1 torr. Saying it is close enough isn't the standard I want the 34S to be judged by.

I would support adding a mm.Hg conversion.


Pauli