Calculator blog
Musings and comments about our common interest
A request for HP15c heavy users
Published on by JGD
Now that we can reasonable expect to have the possibility of saving and restoring HP15c memory in the near future, and even interfacing it with external software, we could envisage to have software pacs for the HP15c - just like we did for the HP41c. We have 25 labels and that can account for many programs for a given subjext - even if some labels are used for the programs inner subroutines.
What would be the software pacs you could like to see first? What would be its composition?...
Some clarifications about the HP15c CE
Published on by JGD
I have seen in Facebook several opinions about the HP15c CE and I would like to comment on them.
- The HP15c CE and HP15c LE are not "the same calculator": there is a different processor, more advanced and with less consumption. Also the keyboard quality is superior. Battery life is at least 6 times better on the CE than the LE. My first CE is still running with the first set of batteries despite being my main calculator.
- The HP15c CE is reallistically firmware...
Interfacing with your HP15c CE
Published on by JGD
As you know, your HP15c CE has a USB connection in a 6-POGO pin connector in the batterty bay. This connection can be used with a cable, and so far has served to fix the firmware of the machine to fix several bugs.
Now we are testing its use to back up and restore the calculator memory , and also to interface with external software, to modify programs and document them. It will be fantastic to be able to do so - which was not a possibility when you bought the calculator!! Also: no ...
The innards of the new HP15c CE
Published on by JGD
Hi,
I tried to work on the keyboard of a HP15c CE. I opened it, taking out the 5 screws (do not forget the one beside the battery!). Here is what can be seen inside:
Continuation of "New glue..."
Published on by JGD
I have been using the Schwanheimer Industriekleber 100 glue already for some time. When properly using (making generous use of the primer on both sides) it is the best glue I have used for calculator repair. Better and thinner than E6000; no comparison with E6000+; and miles ahead than other cyanoacrylates. I think the primer makes all the difference.
Next developments for the HP15c CE
Published on by JGD
The enhancements I foresee for the HP15c have to do with the cable and firmware posibilities:
- Backup and restore user memory
- Some kind of memory manipulation of the user memory file, so that it can be used in other software like Thorsten Manz's fantastic HP15c.
Both things together can create an ecosystem for the HP15c. So far, entering a program was cumbersone and had to be done each time. With backup and resotre, + memory editing outside of the calculato...
Cable VI - what you can do with it!
Published on by JGD
I have already had 3 customers that have purchased a HP12c (NOT HP15c CE !!) + the programming cable + HP16c overlay.
You can guess what the plan is: to get a much cheaper HP16c in addition to their HP15c CE (which all three purchased before, with the newest firmware already fixing t...
Cable V
Published on by JGD
Finally we received the cables (just 300 units of the 1000 ordered- the rest after Chinese new year), and we are shipping them to customers already. Hold on- yours is about to be sent if it hasn't yet.
On the other hand, we have created some pages with information on the use of the cable. We have just focused on the c...
cable V !!
Published on by JGD
We finally have a DHL delivery date for the cables ! We are receiving them this Thursday. We have already prepared many packages and documents to be able to send as many as we can immediately.
The cables have CE certification. I will post it here when I get the original copies of it.
