Search found 16 matches

by reavy
Mon Apr 30, 2018 11:23 pm
Forum: DM42
Topic: PDF of DM42 Quick Reference Guide
Replies: 19
Views: 2474

Re: PDF of DM42 Quick Reference Guide

All, I posted a new version of the document with updates from Tom at the same link as before. Apparently some links were missing that are now corrected in the document. Enjoy.
by reavy
Sat Feb 24, 2018 8:32 pm
Forum: Hardware issues
Topic: Keyboard debouncing
Replies: 11
Views: 1599

Re: Keyboard debouncing

I had this happen with the ‘2’ key immediately out of the box. It’s definitely not an auto repeat issue because I got two 2s with one press of the button, no delay at all. It has only happened once and only with the one key, but unfortunately it’s cost some of my confidence in the machine, and I am ...
by reavy
Thu Feb 15, 2018 6:21 pm
Forum: DM42
Topic: February run of DM-42
Replies: 111
Views: 11211

Re: February run of DM-42

Finally received mine in Phoenix today. Postmark was from 2/2. Customs obviously inspected the package. No damage, and the calculator was still in the sealed plastic bag, but I think it might explain why these orders are taking so long for some to arrive. In the past, I have received SM orders withi...
by reavy
Wed Feb 14, 2018 6:08 pm
Forum: DM42
Topic: February run of DM-42
Replies: 111
Views: 11211

Re: February run of DM-42

Murder is one of the crimes excluded from the "statute of limitations" in the U.S..
by reavy
Wed Feb 14, 2018 7:44 am
Forum: Hardware issues
Topic: LCD burn-in?
Replies: 6
Views: 929

Re: LCD burn-in?

The LCD in the DM42 is comparatively new technology from Sharp called "Memory LCD". https://www.sharpsma.com/products?sharpCategory=Memory%20LCD&p_p_parallel=0 It's designed for this and actually uses up zero power to maintain the display when the calculator is switched off. So is this display tech...
by reavy
Wed Feb 14, 2018 7:35 am
Forum: Hardware
Topic: [DM41] Screen tearing
Replies: 4
Views: 596

Re: [DM41] Screen tearing

It does sound similar, but I believe I observed the effect on the DM15L, too.

Does the effect go away for you when setting the speed to 48 MHz?
by reavy
Tue Feb 13, 2018 6:03 am
Forum: Hardware
Topic: [DM41] Screen tearing
Replies: 4
Views: 596

Re: [DM41] Screen tearing

It’s only when running a program. The stopwatch function on the DM41 is the easiest way to reproduce it.

I will consider making a video of the phenomenon within the next few days and including a link here.
by reavy
Fri Feb 09, 2018 3:45 am
Forum: DM42
Topic: February run of DM-42
Replies: 111
Views: 11211

Re: February run of DM-42

No, you don't need a tracking number for Informed Delivery. You register your address with the service and provide some kind of proof of residence using your name and some other identifying material, and then the USPS will proactively notify you of incoming packages even if you do not have their tra...
by reavy
Thu Feb 08, 2018 6:48 pm
Forum: Hardware
Topic: DM1x Processor Speeds vs HP1x originals
Replies: 2
Views: 302

Re: DM1x Processor Speeds vs HP1x originals

Yes, of course. I understand that you can't compare apples to oranges the bare metal original vs the emulated processors in the SM units.

Thanks very much for the info!
by reavy
Thu Feb 08, 2018 6:46 pm
Forum: Hardware
Topic: DM41 keypad legend separating
Replies: 3
Views: 458

Re: DM41 keypad legend separating

After letting it sit overnight in the clamp and after using the heat gun, it stayed stuck on for about an hour and then came off.