Re: NiHM batteries in HP-25 Message #9 Posted by Vieira, Luiz C. (Brazil) on 3 June 2005, 8:16 a.m., in response to message #8 by Rodolfo Canet Castello
Hi, Rodolfo;
thank you for taking your time to describe the problem 8^)
Indeed, this is completely new for me. Your description refers to what seems to be a problem related to SW instead of hardware. Just a question: if you store zero in all registers separately with:
[0]
[STO]0
[STO]1
[STO]2
... and so, will this happen the same? Or have you tried to start a new statistics calculation without computing MEAN or any other? (senseless, I agree; what would entering data and not computing statistics functions be good for, han?) Now it is just a curosity of mine, because if with the first time it works fine, how come the others it doesn't? By taking software behavior it would be easier to explain, but even so it is still complicated...
And about the problem attracting my attention: posts in here tease me! I read them all, but unfortunately I have no way to answer some of them. If I have the answer or if I can try to help? Well, I'm already reading, why not to be usefull and make some new friends? That's what makes life worth living... Oops! Maybe not the subject itself... ;^)
If you have the time to test and let us know abotu, I'm sure others will also post and try to go ahead with the discussion. But please do not bother yourself in testing just for this purpose, just wait for having a chance to do so. These Woodstocks, as you mention correctly, are rare 'specimen', and for as long as they can be kept alive, better for us. I have my own HP25C with bad ROM chip: although I can key in numbers, perform some stack operations and store keystroke codes in program memory, the simple [ENTER] pressed in run mode returns a display full of zeroes. I removed one of the ROM chips (don't remember which) and it kept the same, meaning that chip is dead, and I tested another one from another calculator and it worked fine. Well, I cannot find a replacement unless it comes from a donator, but this HP25C is in fact resting for a while, as are two other of my own calcs and at least some other six or seven calculators from friends and contributors in here... Effective spare time for repairing is rare for these days, but I'm getting 'back to the korkbench' in these vacations... At least I hope so!
Best regards and success! (and thanks for the kind words ;^)
Luiz (Brazil)
Edited: 6 June 2005, 8:30 a.m. after one or more responses were posted
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