Musings and comments about our common interest
If you remember our previous post, we were talking about the different keyboards in HP12c's of late. Seems that it is due to products from different factories - the big % sign coming from the Invertec factory and the small % coming from Kinpo.
Here you see the codes on the back of the unit: IN04 and KN05.
Now, all the new 12cs I am receiving belong to the "big %" type...except the new HP12c Anniversary (due in Europe from next week on!)
(By the way, the HP15c Limited Edition comes as well from the same factory, and you should expect the same quality - I can attest it!)
Today I have received a USB to com adaptor. Since most of our computers are laptops and quite new, we did not have serial adapters. I have then proceeded to update a 12c+ with the latest available software. In this particular case, it did not increase speed (it was already 150 times faster, so I am not deceived), but it corrected a number of issues compared with the original firmware.
We have decided to offer firmware flashing as a service for our purchases of a calculator. It will have a 10 € charge. The rules:
One of the most exciting projects is the repurposing of the hp20b and hp30b financial calculators with ultra-slick scientific firmware. The project is called wp34s and is run by Marcus von Cube, Walter Bonin and Paul Dale (in no specific order!).
You can find it on http://wp34s.sourceforge.net/
There have been a number of releases (build number was 800 at the time of writing), and you can check whether you like the software by running the included .exe file and testing the features. The .exe file has the advantage of having the right labels on the keys!
I have not yet tested the flasher cable and software on a HP30b but I plan to do it shortly. I will then report on the results!